Since starting my tank, I have never missed a weekly water change and have stable parameters with nitrates below 2.5 ppm and healthy coral growth. I noticed after each change, I would get a little cyano growth on my rocks that would quickly go away, so I decided to skip a water change to see how the tank reacted. It did great- corals are super happy, fewer bad stuff (I don’t have much to start with), and now my nitrates are even lower two weeks after the last water change (0.2 ppm). I dose All-for-Reef and have stable parameters (Alk, Calc, Mag, PH, salinity). Is there any reason to do a water change now at two weeks? Any reason not to extend my water change interval to three weeks considering everything is so stable and I had such good results at two weeks? It seems like I can extend to three weeks and it would actually be a positive thing, but I wanted to check with the experienced folks here to make sure I’m not missing anything. For the experienced folks, do you do something besides the weekly water change? Thanks!
Salinity- 35 ppt
pH- 8.1
Alk- 8.6 dkh
Calc- 410 ppm
Mag- 1290 ppm
Temp- 78 deg
Nitrates- 0.2 - 2.5 ppm
Phosphate- 0.01 ppm
Salinity- 35 ppt
pH- 8.1
Alk- 8.6 dkh
Calc- 410 ppm
Mag- 1290 ppm
Temp- 78 deg
Nitrates- 0.2 - 2.5 ppm
Phosphate- 0.01 ppm