11-09-2008, 09:37 PM
Join Date: Jul 2006
Location: Dallas, TX
iTrader Positive Rating: 100%
| | Re: 37 Gallon Planted discus Tank
Brown algae and green dust algae (collects on the glass but easy to remove) are typically a sign of too many nutrients and not enough plants to consume them. Nutrients could come from over fertilization or over feeding. As the tank matures, and the plants get established, it will go away as long as you're doing the other things right. For now all you can do is remove it (manually or get some bristlenose plecos, these don't grow large and are safe with Discus) and do water changes more often. If you have the lights on more than 8hrs a day, you should decrease that at least until the tank matures. Also, CO2 would help plant growth.