- 11 Jul 2007
- Chicago, USA
Yes, detritus that settles in the carpet beds decay and attract algae. Many people try to be gentle during a water change but I prefer to be as violent as practicable. That way I can dislodge any weak, dead or marginal leaves and other junk. Pointing a powerhead or pump output at the plants can help with the dislodging while avoiding physical contact. Getting rid of dirt, junk and muck should be a top priority...