OK looks like I made a mistake - res temps are hovering around 60 - 62.5 degrees fahrenheit (my mistake converting Celsius to Fahrenheit) & room temps are between 70 - 72

still think res temps are a little on the cold side and I appreciate suggestions of how to raise temp and intend to use them

have seedlings right now being fed no nutes as of yet, PH between 5.5 - 6.0 (always shooting for 5.8) and a few of them look a little yellow although they still growing

think it could be because of res temps and/or the reservoir water is filtered tap water which is very hard at about 450 ppm. going to get a RO water maker and add some CalMag plus so I know what I'm working with
hyperjive Reviewed by hyperjive on . Reservoir Temps between 48 - 52 fahrenheit my reservoir is on a concrete floor in my ebb n flow set up. Temps in the reservoir are between 48 - 52 degrees fahrenheit. have been reading that reservoir temps ideally should be in the 65 - 70 range if I remember correctly. what kind of danger is there for my plants (currently 2 week old seedlings) with these low reservoir temperatures? what is the best way to raise reservoir temperatures? (was considering heating pads) Rating: 5