What kind of ridx are you guys using because judging from the safety instructions it sounds like it pretty rough stuff. It says it could be extremely irritant to eyes? Will this effect fish. I did read about using septic bacteria but I haven't found a good kind to use and I really want to try this out even though my bio-load is extremely light. I could probably do water changes every two weeks if I wanted judging by my water parameters but I prefer to have my water extra clean so I've been looking into this
Rd wrote a great thread on the subject. Checkout the pro biotics sticky in the health section...long but interesting read