EllieSuz
Premium Member
I bought a used Two Little Fishes reactor and got a tub of Rowa Phos. I seem to remember some instructions in the jar, but darned if I can find them now. How much do I use of this stuff? I assume it goes between the spongie thingies; one on the bottom and one on the top. Do I need to rinse it first? Presume absolute ignorance and tell me everything I need to know, please.