droopy plants in first custom flood 'n drain system

tyepoe

Well-Known Member
so around feb 5th I made this temporary system that might need to become slightly more permanent by another month or so.

bought 3 cloning trays and fitted a outtake on each which waterfalls into the 20gal res and the pump goes to each trays intake. At first I had the pump going 24/7, put airstones in there to suppliment for root oxygenation and the outtake and intake fitting are about 1/2 inch above the bottom so there is always water in there.

around feb 9th I noticed the back(larger and older) plants getting droopy and some other plants tips were drooping but also most leaf tips were droopy and either dying or turning brown... some other plants getting a little discolored(getting lighter in color).

until the 9th I had only ph'd water in there and the pumps going all the time(that night I gave the res "Flora Series Expert Recirculating Week 2" feeding). I read online that droopy tips could be too much water...so I put my timer on the pump to turn on/off every 15min but like I said earlier, a little water was always in there and since the netpods where just placed directly on the treys, the roots are / were always in water.

I just put hydroton below the netpods so when the water drains out the bottom of the netpods are lifted up enough to be outside the standing water. Also, since the feeding, the roots have shot out on most of all the plants, so theres one good thing.

Im just wondering if someone has input on my custom flood and drain system. Is this a deficiency or more water shock / overwater since the first few days the netpods were always in water? I built a top for each tray so the roots will now be in the dark and I think that will help as well as the netpots being outside the water when the water drains out but now the roots have grown into the tray and will always be in that water as well(like DWC) which is why I figure the airstones should help with that....

Any suggestions/ critisism welcome on my first system other than DWC(and any explanations for the droopy tips)

refer to image "infographic.jpg" for concise explanation of problem children.

Thanks!
 

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tyepoe

Well-Known Member
there is no airstone in the res but all the outtakes are waterfalling into it... I have also been turning everything except the pump(which turns on/off every 15min) off at night for 6 hrs
 

deadgro

Well-Known Member
That's not enough aeration. They're drooping due to over watering which doesn't mean too much water, but not enough oxygen. Get the air stones back in the rez.
 

tyepoe

Well-Known Member
that makes a lot of sense... but why dont the airstones work directly next to the netpods? I figure the bubbles in the water will go more directly to the roots if they were close to the root site rather than if they were in the rez and had to travel up the intake... and doesn't the waterfall effect help aerate the water?
 

deadgro

Well-Known Member
If they're in the tray, most of the time they're not submerged so they're not aerating the water.
 
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