DIY flood tray

I made a flood table from plastic, cos no local hydro shop sells the size I need (4x8ft). Made it hermetic etc... It can hold over 100 litres.
Never used such thing, so now trying to figure out how usually do I need to empty it from the runoff water? So that the infection does not have enough time to develop? I water about 40 litres a day till it drain about 20%

Pots itself stands on a plastic platform (3 inches above the bottom of tray)

vostok said:

Flood To Drain The Easy Way - NFT Hydroponics
Flood To drain hydroponic trays made easy. Kush Coast

showing ways to "GYO" premium grade Cannabis without breaking the bank!

one of the best fuk and dump diy flicks about

in truth his yabba is too fast

but you will get the drift

good luck

Click to expand...

yes this is how it should be done, but I am currently using couple of towels and a bucket to empty the tray

would once a week be enough?

I use a shop vac and suck the water out. Works quite well but my setup is a lot smaller.

rolljoeroll said:

I use a shop vac and suck the water out. Works quite well but my setup is a lot smaller.

Click to expand...

How often do you empty yours?

my shop-vac I just roll over to a floor drain. It helps I am in a basement.

You're not doing what's referred to as flood and drain which would require pumps, a reservoir, a method for oxygenating the nutrient solution, etc... You're doing a standard watering to runoff and capturing that runoff to discard later by removing it with a shop vac. Basically a manual drain to waste setup without a drain.

You do not want those plants sitting in that stagnant nutrient solution for any amount of time.

xtsho said:

You're not doing what's referred to as flood and drain which would require pumps, a reservoir, a method for oxygenating the nutrient solution, etc... You're doing a standard watering to runoff and capturing that runoff to discard later by removing it with a shop vac. Basically a manual drain to waste setup without a drain.

You do not want those plants sitting in that stagnant nutrient solution for any amount of time.

Click to expand...

But pots are lifted, so they don't touch the excess nutrient solution, I am emptying it once a week, hopefully I dont get any mold...