Hi all!
My tank (20g cube max Nano) has been up for 10 months now (10 months is short, but I got the rock from a 6 year established tank), and up until the last month looked great. Over the last month, everything has started to slowly decline. Polyp extension is down on all corals, not too much growth, and a couple on their way to fully dying. I'm trying to get things back on track but not sure what the problem might be. Stocking hasn't changed in the last 3 months, and levels look ok (see below).
I've started doing weekly water changes (used to be 30% monthly), changed the carbon and purigen, and turned the skimmer to a more wet skimmate. Other than that, I don't really know what the problem could be or how to start diagnosing.
Cal: 400
Alk: 9.0
Copper: 0
Nitrate: 10 ppm
Phosphate: 0.05 (Salifert kit, a little hard to tell, somewhere between 0.03 and 0.1)
Salinity: 1.025
Temp: 77.5
Stocking is:
2 clownfish - 8 months
Duncan coral, was growing well but now has poor PE
Xenia - even the xenia has bad PE
2 BTA's that are growing well.
Bling Bling cyphestria frag - Honestly this one never took off/looked healthy, now is on the verge of death.
GSP - growing like GSP does
Frogspawn - poor PE
Hammer - Poor PE on one hammer, some tissue recession on the other
Photosynthetic Gorg - looking ok
Aleviopora - Almost no PE, havent seen it open up fully in a couple of weeks.
2 almost dead monti frags
Purple pincushion urchin
A bunch of snails
My tank (20g cube max Nano) has been up for 10 months now (10 months is short, but I got the rock from a 6 year established tank), and up until the last month looked great. Over the last month, everything has started to slowly decline. Polyp extension is down on all corals, not too much growth, and a couple on their way to fully dying. I'm trying to get things back on track but not sure what the problem might be. Stocking hasn't changed in the last 3 months, and levels look ok (see below).
I've started doing weekly water changes (used to be 30% monthly), changed the carbon and purigen, and turned the skimmer to a more wet skimmate. Other than that, I don't really know what the problem could be or how to start diagnosing.
Cal: 400
Alk: 9.0
Copper: 0
Nitrate: 10 ppm
Phosphate: 0.05 (Salifert kit, a little hard to tell, somewhere between 0.03 and 0.1)
Salinity: 1.025
Temp: 77.5
Stocking is:
2 clownfish - 8 months
Duncan coral, was growing well but now has poor PE
Xenia - even the xenia has bad PE
2 BTA's that are growing well.
Bling Bling cyphestria frag - Honestly this one never took off/looked healthy, now is on the verge of death.
GSP - growing like GSP does
Frogspawn - poor PE
Hammer - Poor PE on one hammer, some tissue recession on the other
Photosynthetic Gorg - looking ok
Aleviopora - Almost no PE, havent seen it open up fully in a couple of weeks.
2 almost dead monti frags
Purple pincushion urchin
A bunch of snails