Some small pond plants are in it, mainly for shade for the gourami. Good fine filtration prevents green water. An August 11th photo, after adding the pleco and 2 new gouramis, is shown below. Still no water changes, no chemicals. Green algae feeds on nitrates and phosphates.
Brown algae feeds on nitrites and nitrates.
Red, black or dark green slime algaes are bacterial in origin, actually cyanobacteria. They seem to feed on excess proteins and phosphates, and are most common in tanks with a high pH. Photos will be added to this page for identification as time permits. Power filters Quarantine box Quarantine filtr. Vegetable clips Water cond. Shipping Info Security Warranty Info Cart Errors Top of Page Green water is the most frequent complaint I hear from owners of relatively new aquariums with power or canister filters.