Hi! I am brand new here! Wow , what a helpful forum! I have a 29 gallon tank , running about 7 years, HOB filter (Penguin 330), that I have sadly neglected in recent years. So now I am trying to be a good fish owner and take good care of it! It has live plants (Java fern, anubias, a few Amazon swords, a banana plant), cf light 65 watts (10,000 K daylight). Current fish : 1 red eye tetra, 2 zebra danios, 1female platy, a few platy fry. I used to have more tetras and danios and platys. Ammonia 0, nitrite 0, nitrate 40, pH 6.0 before water change, 6.2 or 6.4 after. I have been doing 20% water changes 3 x per week the last 2 weeks. Also I used to have a huge algae problem (tons of dark green hair algae) but the light bulb burned out a few months ago and I just replaced it. Still remnants of algae but generally tank looks great. Somehow the java fern and anubias did fine without lights, just from the room. Swords and banana plant are new. Ugh, I feel terrible for being negligent!! But today is a new day, right? Are frequent water changes good? 3 x a week ok? Java fern is growing on 2 large pieces of driftwood . Should I vacuum under them often? I did vacuum under them once. I may re-home the fish at some point and get new ones, gradually, but I am still thinking about good stocking schemes. Still want to keep peaceful small community fish. Ideas? I realize that for now water changes to get the nitrates down would be good. Lights are on 8 hours/ day to avoid fueling more algae growth. I changed both filter inserts last week but in the future will alternate replacing them. I use Prime and Flourish (for plants, 1/ week). Thanks so much for the support !