My wife and I set up our Fluval Flex 123L 3 weeks ago tomorrow. We’ve been pretty diligent (I think) with testing (API Master) and water changes to keep ammonia levels in check. We are using Eco-Complete substrate and have 4 live plants in the tank. We’re also using Prime to protect 6 danios (next aquarium will be a fishless cycle!) and have used Fluval biological booster with each water change. Our last water change was 4 days ago at about 50%. We haven’t touched/cleaned the filters since setting up the tank. Since the last water change, the ammonia level has been between .25 and .50 with no nitrites or nitrates. pH level is about 7.6 and the water temp is 75. Although we noticed a small amount of nitrite, we haven’t seen what I’d consider a spike. And we haven’t seen any nitrates at all! So, I haven’t a clue where we’re at in the cycling process! Sorry for the long introduction! My question. . . Is a water change recommended at this point?