Whoops, my weeds are turning yellow.

[Nate_in_AK]

This is a new development in the past couple of days. Looking for opinions here before just doing a res change.

These are starting week 6 of flower. Nutrients are Growth Science Nutrients A/B/RockSolid. The res is a 35 gallon tub, filled to maybe 20 gallons. I've been trying to keep the pH / PPM at 5.6-8/800 but it's been a bit of a shit-show because the pH keeps dropping, PPM going up, water level going down. This indicates drinking more than eating + possible 'acid rain', according to the famous helper chart.

Any feedback/suggestions other than full res change?

Thanks, my dudes! (and dudettes)

 

[Aqua Man]

View attachment 1051318

This is a new development in the past couple of days. Looking for opinions here before just doing a res change.

These are starting week 6 of flower. Nutrients are Growth Science Nutrients A/B/RockSolid. The res is a 35 gallon tub, filled to maybe 20 gallons. I've been trying to keep the pH / PPM at 5.6-8/800 but it's been a bit of a shit-show because the pH keeps dropping, PPM going up, water level going down. This indicates drinking more than eating + possible 'acid rain', according to the famous helper chart.

Any feedback/suggestions other than full res change?

Thanks, my dudes! (and dudettes)

Lower your ppm IMO. 600 always did me well. Not sure what ratios but the N can come down.