Welcome to the TFF forum Helpfishy.
I think you have a tank stocking that is close to maximum for the volume of your tank. Please do not add any fish until we have a chance to evaluate your conditions.
If you do not already have such a thing, a liquid type water test kit would be a good idea when starting out. Once you have enough data, the chemistry of your water supply will give us a simple tank maintenance regime, but in the short term we will ask you to make plenty of measurements.