I have a bottle of hydroguard but I use it every once in a while but not religiously
Revanche21 Reviewed by Revanche21 on . to change or not to change...my reservoir Hello and welcome back. I've been dying to ask this question and finally here is my chance! i want to get some opinions about whether or not i should change my reservoir every week to 2 weeks as many people prescribe, topping off with water, or whether i can get away with topping off with nutes, and not worrying about changing the res. i have quite a few tubs running, and changing the reservoirs is heavy duty labour, and i would MUCH prefer to just top off with full strength nutes and change Rating: 5