I have a planted, 12 gallon Fluval Edge community tank. I have had RCS in there for a while and they were very active grazing on everything in the tank. One of the shrimp is berried too. Since I made a couple changes they are now huddled all together and very lethargic. They just don't seem to be eating (at least during the day at least).
The change that seems to impact them instantly was adding Baby Dwarf Tears to the tank. They came on a metal 3x5 mesh that I cut to fit and planted. The mesh looked to be aluminum and thus I thought should be safe.
The other change was adding a pressurized CO2 system. I am running it at less than 2 bbs though. I am still running an airstone to keep the oxygen levels up since the Edge doesn't have much free water surface area.
Here are the specs after the CO2 was added
Ammonia 0 (been this way for 3 weeks)
Nitrite 0 (been this way for 3 weeks)
Nitrate 0 (been this way for 3 weeks)
pH 6.8 - 7.0 (Dropped from 7.6 after CO2)
kH 2.5 - 3
From this it looks like the CO2 ppm is 11-17.
I only lost one CRS and I think it was because I was overly aggressive when I first ran CO2 the first day. But 4 days later, the shrimp are still lethargic and not acting the way they did before.
Any thoughts from anyone? Outside of waiting to see if they assimilate to the new plants and CO2, I am not sure what to do. Maybe add carbon back to my filter for a short term?