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Anyone doing the above for a smaller nano tank? I am always battling algae bubble and other kinds of algae from when I had my 11 gallon and now with my 25 gallon. Its not feasible to do a refugium. It does get better with purigen or GFO in the aquaclear hang on back filter system but looking for something a little better. I now do the water changes etc and I can ramp those up more but I am now doing 20-25% per week. Only have four small fish and a couple shrimp in the 25. Thoughts?