Unknowingly dosing ammonia?
I live in a nearly hundred year old house in Indiana, so my local tap water is somewhat similar to a limestone slurry with some rust mixed in. Additionally my municipality uses chloramine. To dechlorinate I use Prime. Last fall I started using primarily RO water (reconstituted with GH booster). While things did start growing a bit better, I still am fighting BBA, and an occasional outbreak of long stringy algae. This seems to happen less if I do less water changes, but still fertilize.
My water coming out of the RO unit has ~1PPM ammonia in it. While the Prime does project the fish, is this still the equivalent of giving the plants (and algae) an ammonia dose every week? If so, are there any good ways to get the ammonia out of the RO water other than a DI or extra carbon stage? A while ago someone suggested running an airstone in my RO tank (125 gallon), but I am unsure how quickly that will remove the ammonia.
On my display tank (75g) I dose EI with tons of CO2, and normally do a 50% water change every week. Lighting is two home-made T5HO bulbs, but with a really crummy reflector (aluminum foil). Most red plants only turn red at the very top of the water, so I doubt I have a ton of light. Filtration is Poret foam sitting in a sump (basically an HMF but in a separate tank).