what's in your res? just water or is there nutes in there? are you using tap water?
I maintain ph w/GENERAL HYDROPONICS PH CONTROLE KIT with ph up/down.....works great.look into general hydroponics pH up and down. they are great for hydro but also work for watering soil.
I have a 20 gallon resevoir and ive started using concentrated lemon juice to lower the ph, but after a few hours it goes back up. Any advice would be appreciated. thanks
Amongst my friends we've done 3 gardens now with the Flora Duo. In all three we were dumping pH UP in just about every day. Was pretty weird. Did anybody else have that experience with it?