My 65 gallon planted aquarium has been up and running for about 6 months. It cycled up nice and ran wonderfully until about 2 months ago when algae started on glass, spread to plants eventually just about smothering them. I suspect the algae bloom may have something to do with plants versus algae - lots of new plants and fish gave the algae an in! I'd be interested in anyone else comment on this. Here's what I tried: Part 1: 30% water changes weekly. mechanical removal of algae with changes 2 capfuls of Excel daily *I augment my CO2 system with 1 capful of Excel daily but read that doubling the dose has great algae control. This worked surprisingly fast and the Excel obliterated the algae growing on the plants but... Part 2: Although the plants/glass were looking great I had a massive algae bloom in the water / green soup! You could not even see across the tank. Information from a bunch of sites told me to do 30% water changes daily and I did this for almost month without resolving the problem, then discovered the world of water clarifiers. Seems like a big "duh" now but... I used one dose of API Accu-Clear as directed and within a few hours my tank was crystal clear. Seriously. I was amazed. There are a bunch of these products on the market for example Seachem's Clarity, whatever. I think they all work the same way - they cause very small particles to clumpy together. Algae just circulates with the water with normal filters. Clump the algae together and your filter catches them. After clearing the tank I cleaned my canister filter (Fluval 306) and as expected the water and filters were deep green. Nice. There are other solutions too like using a clarifying sponge in your filter or intake. I'm hoping that I've cleared up a spot problem and the underlying problem is solved (plants established and pulling nutrients). I'm not sure I'd like to use a clarifier on a regular basis - fix the problem! Only time will tell. ->Yes I have snails, Siamese Algae Eaters, Otoclinclus, Shrimp (down to 1 now). I hope my experience is helpful.