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i know your setup is dwc but you might benefit from making some water rings out of 3/4" drip tubing instead of just having one small water outlet, you might get more even root development. Good luck and i hope your able to get your perpetual garden back up and running.
PH in Hydro growing is directly related to PPM. If you add nutes PPM goes up PH goes down.
PH will fall if plants take up more water than nutes. PH will rise if plant takes more nutes than water.
Overwater in hydro is whan the nute levels are to low and the plant sucks up to much water in a drive to get nutes it needs.(Plant looks droopy and slow growth)
Nute Burn is when Nute levels are to high and plant does not suck up enough water because it already has all nutes it needs (Leaves start to dry out on tips because of lack of water.)
Hydro growing is about finding that perfect nute ppm level for the plants to take nutes and water and same rate thus not effecting ph levels.
Here are some basics that have worked for me.
Air Temp 75-85
Water Temp 65-75 Very important !
PPM 800 - 1200
PH 5.5 - 6.0
What is your water temps, those black buckets look very hot !
So the more I read and talk to folks about, the water temp is very important. You are correct.
Those buckets were running water in the 80's. Thats probably not a good deal consider the amount of bugs that grow in warm water. So, tax time *yay* allowed me to actually buy a new setup.
I went with a ebb&flood table.
Table is 2'x4', The Res is a 40 Gallon, Also 2'x4'. bought a new pump as well as trying out new nutes. Went with some General Hydroponic Nutes. Since there 3 part and they are the best selling in the shop i go to (would like to avoid state nutes).
So 5 of the 10 plants survive the ph inbalaces and now are sitting in the flood table. Im sure I need to change the freq these are being watered at. Since the pump is set for 3x a day at 2 minutes a run.
What do you guys reconmend?
Also, one of the plants started acting up again.
Yes they are blurry. But this plant just shrivled up, have NO clue whats happening to them. I put them in differant smaller pots, and notice the roots are getting dark brown and look like they may get slimy. Gave them a bit of a proxcide bath.