Hi guys ... first time hydro setup here ... almost month and a half into veg grow and I'm finding my PH at approx 7.5 - 8 (....yes way too high). Can I use my products i have for my swimming pool to adjust the Ph level in my reservoir container(Ph Up & Ph Down)? Also, just wondering how much water I need for 6-8 plants; I have 5 going right now but i think 60-70 litres (16-18 gallons) might be too much. I have some yellowing going on on my White Widow and just a little on the a branch or two of my Sweet Tooth. The temp in this enclosed space in basement closet pantry (I have kids in computer room beside it :-)) was way too high at first due to poor ventilation - i finally got it down on monday to about 78 F. I am using a continuous drip.
also, Anyone in the Toronto GTA with recommendations where to find a stanley blower for my flower room give me a shout - I currently have a 120 cfm inline Nutone fan but it is not effective in drawing the air thru my air cooled HPS light and filter thru 20 feet of duct to outside). :-))