Hi
I posted to a couple of Facebook groups about problems with a new Eheim filter.
I mentioned that I've been cleaning the tanks and filters every 3 weeks, but I was advised that I shouldn't clean the filter that often, to preserve the good bacteria, and that I should be testing their water.
So I've gotten a test kit and will be testing for ammonia, nitrate, and nitrite - anything else?
I need to work out a new schedule for testing and cleaning so my questions are:
How often should I test - weekly?
If levels are too high, how much water should I replace?
I have a 100 gallon tank filled to 80 gallons that I drain to 30 gallons, replacing 50 gallons.
Also a 50 gallon tank filled to 35 gallons that I drain to 20 gallons, replacing 15 gallons.
How often should I clean the filters - is every 2 months about right? Is this based on tests or something else?
Thank you!