Highest information density of all hydroponic videos so far.

Probably one of the best starter videos I have seen. Well done and thanks for creating it.

Back to watch this for a fifth time to see what new details I pick up this time. Thanks for all the great content, Everest !

wow your good on making things simple ty. I'm glad you are taking the time to show people first starting with rockwool. I'm going to keep watch for more

Super like this Video. Much Information with easy understanding and time saving. without music make me more serious watching it. Well Done

Great information on starting plants in hyrdoponic systems. I appreciate the video. I am just getting started.

Everest thank you for the college level tutorial, rockwool. I had no idea how extensive the rockwool uses are and the huge variety of sizes of shapes available. I'm happy to be here, thanks again for your presentation.

as a care giver i find videos you do very on point tyvm keep it up

Damn man, I learn so much from you and I'm laughing at how wrong I was doing it.

Everest, your videos are my go-to for lots of projects i do. Love it!!! I am starting tons of basil seeds in rockwool today. Thanks for the videos!

very interesting I use rockwool cubes for years to do my cuts

Thanks! I was wondering if I could transplant my cubes into soil and you answered my question. Good thing coz I already did. lol

That was great video as I'm about to use someRockwool for first time. Cheers

I've watched this video 3 times now, today was my first seedly hatching. #CanadianCBD for that factory life

+ Amy Sidious thanks for your comment. Stonewool is spun from natural rock fibers, it is not fiberglass. The WHO categorizes it as bio-soluble meaning you can even eat and inhale it and the fibers will simply dissolve in your body. However, in its dry form the fibers can irritate the skin so I always spray it before use. Personally I have never experienced ill effects but I have friends who find it a little itchy. After handling, I rinse my hands (I don't scrub) - MSDS can be found here: grodan101.com/sites/default/files/leaflets/MSDS-US-09012014.pdf

Great video! Best I’ve seen explaining rock wool. Thanks!

Great detail. Loved it.

Awesome video Everest, really enjoyed that and I know our customers will too! Keep up the great work =)

the best ever video for beginners full of information. thanks you too much

Just starting my hydroponics systems and you videos are a great help! Quick question. I'm starting my basil in the Rockwool starter plugs and then when the plant is ready to transfer, move the entire starter plug into a net cup with clay balls. Is that workable procedure?

I am happy coz I can transfer them to soil . Thanks for this great video

Thank you. I had to sacrifice a plant to figure out what was happening to my plants thst started in a cube and they they were slowly dying after planting in soil. 1) overwater at the beginning 2) too big a pot 3) the cube dried the soil still wet. It was horrible not understanding the transition process before hand. Thank you

Im relaxed about it now . Thanks Everest send me the brand of coffee you use

Good content and you cover it at a good pace, thanks for the upload.

A great help! Thank you so much for your expertise! 👍 ❤️

Also when making a soil mix I have pots with a reservoir at the bottom since I don't have the space for a hydro system. How best to stack the clay balls and coco I have?

I and an old soil grower. I tried 1 time to germinate in Rockwool lost all six plants I think there was to much water in blocks don't know but definitely made me stay away from Rockwool. If you have any suggestions I am willing to listen. And yes I followed step by step for preparing Rockwool. I am used to 90% Success and will Rockwool I had 100% failure.

Hey Everest! quick question, how do you feed your seedlings, do you spray? and how often do you feed?

I have romaine, kale, arugula and some varieties of lettuce starting from seed in Rockwool. Everything went great but now the roots aren't continuing to stretch out once I move the cubes into my DWC system. I started the cubes in a humidity dome and once they had a second set of leaves i slowly started introducing them to less humidity by removing the dome lid. Once they seemed happy I put them in my system. I put a few into mason jars to experiment with the Kratky technique and those roots have reached down and are doing great. The cubes i put into my DWC system aren't doing anything. Any ideas?

I miss you man. You taught me a lot

What advantages do these huge rockwool cubes offer over the regular 1" cubes?

I’m curious if you have ever noticed a sulfur smell coming from new Rockwool slabs? I have the same grow blocks you have which don’t smell at all, but the flora flex slabs I ordered smell rotten. Thanks. I enjoy your videos.

+Everest Fernandez Is rockwool still your favorite? Thanks for all your great vidoes!

Thanks! What is the frequency that you add nutrient solution to the rockwool and frequency that you water the rockwool? And how do you know that its time to do so? Any signs??

How do you feel about the safety of rock wool? I'm starting seeds in 2 oz plastic cups and coco coir these days.

New subscriber - thank you! Wondering - I have a large amount of Roxul rockwool insulation from a constuction project. Is there any reason I can't repupose this material in place of these pre-shaped cubes?

It appears im bingewatching your whole existence now

I have a couple interesting questions. Can a 6x6x6 rockwool cube be used for outdoor growing? And I also thought, how fast would it dry out in summer time dry heat say in the 100's? I was wanting to hand water all through the grow. And I thought about buying or building a square wooden pot for it to sit in. Thanks

Does anyone know, can you or have you grown outdoor with the big rock wool cube instead of soil?

Hi reviewSearchs. Can rockwool be re-used? That's a great question! Thanks for asking. Some commercial growers enjoy many successive crops from rockwool slabs by steaming them after the plants have been removed and then replanting. Smaller growers can also do this - a few slabs can be heat treated by pouring hot water through them. Solarization is also possible, as is using chemical disinfectants, although care should be taken to rinse the rockwool well with plenty of water after using these. Commercial Grodan users have the option of the Grodan recycling service, which picks up the used slabs and recycles them into new product. However, smaller growers with just a few slabs of used rockwool can recycle the material by shredding it and reusing it as a growing media, as a component of potting mixes, or by incorporating it into outside soils and gardens.

Yes.... Lettuce.. exactly what I was looking for.

I have been having some real trouble with rockwool. The plants sprout, but never made their way to the surface. Any idea why or how to fix that?

do you have the video with the grown vegetables using that method?

You rock bro thanks for keeping it simple

Good stuff on all your videos! I'm like a grodan soakin it up.

Awesome info, great video vibes

Are these blocks reasonably reusable for shorter lifespan crops, or would that be an argument for going with the small blocks version of rockwool? If you have a review on Root Riot plugs, could you link us to that? I've been using those with expanded clay so far but I hear great things about rockwool so I want to make sure I fully understand both.

Is it okay to place the AOK blocks directly on the slab with a sprinkler system to prevent from drying out? If there are any roots on the sides exposed, would the plant die?

Well done I'm down with rock wool now

Cant I start with the little stone thing and put in then in earth? I need help. Or can I only use stone if I use only stone

Hey everest, now that you live in France, which hydrostore do you use? Since it seems hard to find hyper fans etc on mainland Europe/ LEC lights

Thank you for all your video please can you add a link for all the items that you have used where can you buy it

rewatching your videos many times sir and from what and many can tell you understend alot can you tell me if after growing some domatos can i reseed them to soil with the rockwool it self ? and are those flora duo fertilizers working on soil ?

Great video full of detail

Can you remove the rockwool before putting in soil somehow? Does the rockwool break down over time?

Really good info, thank you!

What causes mold inside the very center of my dense sticky stinky fruit if my humidity is 45 percent with temps around 80 with c02 in high ppm? In Rockwool 1 inch inserted into a 4inch cube placed on top of a 6inch rockwool cube. Could over watering be the issue. Watering 4 times daily

Nice video. I'm correctly living in Jamaica. The problem here is I can't use lights, too expensive. Also, the temperature here is really high. 29-32 C year-round. Which is higher than the temperature you have mentioned in the video. What should I do? Also, I'm thinking of take the rockwool to the hydroponic fast. Any ideas? I'm planning to grow salad and herbs. Thanks

So can I just buy the big blocks of rockwool from lowes and cut them up? I don't see any local vendors carrying these precut products

I do same for while, and i can't resolve one problem. After two weeks, mould is comming on, and plants stops growing. HELP!

Can I use the big mama have to grow a citrus tree? I don’t plan on letting it get any larger than 5 feet tall.

The rockwool medium seems awfully expensive on a per plant basis of about $10 total. What are your main deciding factors in choosing rockwool cubes over, say, clay pebbles that are cheaper and reusable? For a lower priced crop rockwool wouldn't let you hit breakeven.

Thank you very much for the explanation, I was hoping that it was the same product but not to worry. Here in Bulgaria hydroponics is a pretty new concept so finding the materials like rock wool, and the chemical hydroponic feeds is near impossible unless you import the products. any way thanks again all the best JT

Great video!

Everest, got any tips for growing a dwarf fig tree in a small, dark, apartment? Can it be in a permanent hydroponic tub?

hi there, I would like to know where did you buy your lab equipment?

If using a dutch/bato bucket with perlite, do you size up to the 3-inch block or put the 1.5 inche cube in the bucket?

My God man you did a fast video that was easy to take in most of your pesentation

Rockwool is my favorite way to start seeds, I don't turn the lights on until the first plants pop up

rock wool not only for industry, but also for agriculture

I love your videos. Thank you. I have a question for YOU because you’re the first person who gives awesome information and I feel confident KNOWS what they’re doing. I purchased a rather expensive NFT system. I thought it was complete and all I had to do was follow the instructions. Easy peasy. NOT! It came with no instructions so I’m groping blindly. I know nothing about hydroponics including what “ec .5” is. Do you have (or know a great resource) on how to grow from seeds to harvest? Like a complete A-Z series...I have restarted 3 times and I’m so frustrated. Thanks in advance. PS my son’s name is Everest. I’ve never met another Everest 😀

Is this rock wool the same completely as that used in insulation of buildings ?

Awesome video!

I have a question. Rockwool used for planting contains humectant. Does this product not have to be rehydrated in the next plantings? Doesn't it deteriorate and lose its ability to retain water?

Everest, i heared that pH can be unstable in those big cubes. What do you think? Did you have such problems?

very informative; I love the rockw!

Well done boys!!!

is that like a white panda film you are using to cover the rockwool from getting exposed to the light and preventing the expansion of algae

How many times per day and how much water should I use to watering Hugo rockwool in veg and flowering ? I am planing 16 plants per meter ( Orange Diesel ) 3 weeks veg and 10 weeks grow. Can you advice +Everest ?

Is it dangerous to work with rockwool primarily, like breathing it in or something else damaging?

does this steps apply to aquaponics setup?

Thank you for this awesome video. I learn so much from them all

I would pre charge rock cube with at least half strength feed

good info on preventing algae

Really amazing💐

Very informative video...

Nice video.

Ist this medium can blast in future? How many month the medium can be used

Do you worry about the alage with the rock wool?

Very informative.

What brand is the grow tray/table you’re using?

I learn alot from you ,thanks you are a good person very smart and you kno your maths ,love coming jamaica

How to make the pre-soak ph5.5 water solution?

Wait so at vegetative stage pepper plants are best under 500ppm? How about in the generative stage?

Can you hand feed an 8 inch rockwool cube? I grow cannabis for atleast 2 months in veg before flipping into flower.

What is the material or brand of the white covers u use

i want to buy rock wool but theres no rockwool in philippines.

This is so awesome. I'm having this burning desire to create a garden at my home. Is there any resource you recommend to learn about plants and their specific treatment?

what is the diy coco cover made out of?

So you don’t rinse them after soaking in 5.5 water?