Evening teapot. I'll throw out my bit on NFT systems, and how I ran mine.
I used 2 424s in a 1.2x1.2 tent, my advice would be to throw away the black sheet that comes with the system and buy some kingspan sheets and cut to fit. Tape it to the top tray once they start to take off in the tray.
Leave out the air stone, it just messes with the ph, you get enough oxygen from the water falling off the tray at the bottom end. When you put the spreader mat on, let it hang over the back a few inch so you some get the trickling sound as the pump runs.
5.5ph and adjust once it get to 6.2. Always try and not let it run above that.
I like to start my cuts/seeds in the jiffie pellets, they fit perfect in to the grodan blocks. Make sure they get plenty of roots on the block before they go into the system otherwise it will just take a while longer for them to get going. If you have any clay pebbles, put four under the blocks so that there is a gap between the mat and block, this stops it from getting soaked. Also make sure the grooves follow the water flow.
I never bothered with a heater or a dehumidifier and never ran into problems.
Alot of people and internet guides say to have the timer on 24/7. I never did and my pal doesn't either. For the 1st and second week it was 15min on 30min off. Then 15mins on 15 off untill week 5/6 then I did 15 on 10 off untill chop. Try to make them roots come busting out of the block to search for the feed.
I put 2 plants in each tray, and even after a 3 week veg, I had roots up at the pump, the 205s could possibly get blocked from the root mass. I used the bluelab stick, I'm guessing you could buy something that monitors the ph and ec, but it depends on if you want or have the cash.
I change the feed pipe aswell, instead of it just being a single outlet I fashioned a Y splitter on the end so the first block didn't take the full force of the pump.
That write up might be abit mixed up, but I've been smoking 😂✌
"To live is to risk it all. Otherwise you're just an inert chunk of randomly assembled molecules drifting wherever the universe blows you."
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