Just about crashed my tank a few weeks ago. Right as someone warned me about my nutrients being too low I had a massive RTN event. Bleached LPS too. More to it than that, I had just changed back to Halides, my Alk channel pooped out a couple weeks prior. The usual one thing after another. Oh ya, skimmer died the week after.
So, things are on the mend now and I'm trying to get my Nitrates and Phosphates back up. They have been undetectable for the last year or so, and things have been slow growing and not great colors.
-I've been feeding small amounts several times a day (Was feeding roughly half cube/day. Now I'm putting in 2-3/day.)
-Pulled my filter socks.
-Stopped using Prodibio (I've since started the BioDigest again but am still holding off on Bioptim)
Problem is my nitrates are slowly rising, but phosphates rise very quickly. I have to run gfo with very low flow to keep on top of it.
Is this a bacteria imbalance that will eventually find equilibrium?
My routine is 15% water changes every 2 weeks. Vacum the sand and blow off the rocks with a MJ everytime. Using H20cean salt. About to switch to Aqua forest.
This also encouraged me to find a better way of tracking my parameters than a pencil and paper:
As you can see, I'm having a difficult time balancing the flow through my gfo to stay on top of the phosphates. Also, after the RTN I should have shut off the doser so ALK/CA got a little out of control.