Hello:
I have a 135g mixed reef, comprised mostly of smallish frags. Tank has been up and running for about a year. About 3 months ago I discovered Ostreopsis Dino's in my tank, but they have been nearly completely confined to the tank glass. I have taken no real action against them short of cleaning the front glass as usual and reducing water changes to perhaps once a month. Filter socks have helped limit their numbers, I suspect, and I do frequent carbon changes to keep up with any die off.
Also, my tank is in my basement and as summer approaches here, tank pH was dropping sub 7.8, so I have hooked up outside air to skimmer, which seems to have helped somewhat (sits around 8.0 now).
Outside of this, tank was functioning normally. Fast forward to about two weeks ago when I came home one night to notice Coral polyps retracted somewhat. Chalking it up to a bad day, I did nothing and decided to let it go for a few days to see if conditions improve. Unfortunately, they seem to slowly be getting worse, and I have no idea why.
NO3 20-40ppm
Ca - 400-420ppm
Alk - 8-9 (manually dose soda ash)
I'll attach screenshots of my Apex graphs for reference, as well as a few photos of corals. Up until two weeks ago, I was getting good growth out of my corals and coralline, now, it is almost going backwards. Suggestions? Ideas? Could the Dinos be poisoning the water? (Notice ORP dropping considerably). Thanks for the help!
I have a 135g mixed reef, comprised mostly of smallish frags. Tank has been up and running for about a year. About 3 months ago I discovered Ostreopsis Dino's in my tank, but they have been nearly completely confined to the tank glass. I have taken no real action against them short of cleaning the front glass as usual and reducing water changes to perhaps once a month. Filter socks have helped limit their numbers, I suspect, and I do frequent carbon changes to keep up with any die off.
Also, my tank is in my basement and as summer approaches here, tank pH was dropping sub 7.8, so I have hooked up outside air to skimmer, which seems to have helped somewhat (sits around 8.0 now).
Outside of this, tank was functioning normally. Fast forward to about two weeks ago when I came home one night to notice Coral polyps retracted somewhat. Chalking it up to a bad day, I did nothing and decided to let it go for a few days to see if conditions improve. Unfortunately, they seem to slowly be getting worse, and I have no idea why.
NO3 20-40ppm
Ca - 400-420ppm
Alk - 8-9 (manually dose soda ash)
I'll attach screenshots of my Apex graphs for reference, as well as a few photos of corals. Up until two weeks ago, I was getting good growth out of my corals and coralline, now, it is almost going backwards. Suggestions? Ideas? Could the Dinos be poisoning the water? (Notice ORP dropping considerably). Thanks for the help!
