well, i guess the verdict is in and there seems to be unanimous agreement. i am still not 100 % convinced though; it's just not enough for me to know that salts, bacteria levels are raising and this can be harmful. i would like to know for myself how much is harmful, and so i will conduct a side by side experiment, changing the rez in one tub every 2 weeks, and topping off with nutes in another tub without ever changing. i'll let you all know what my findings are. thanks for the tips. ciao
macnasty Reviewed by macnasty 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