I have a Waterbox 170.4/5 that I set up last July. Total free water volume of 130 gallons. I used fresh sand and water but transferred over my live rock from existing old setup. I had a couple Acros that were doing ok in the old tank and transferred those over as well. Everything started to flourish and I ordered a couple packs from Battlecorals with everything doing very well. Have about 20 acro frags to mini colonies in the tank. About a month ago I lost a small colony. I was bummed but know it happens. Everything else was doing ok. Well the last 3 weeks more corals have started to burn at the tips. I checked my water parameters and they are as follows:
Alk: 9.0 (Hanna and Salifert)
Calcium: 420 (Salifert)
Mag: 1350 (Salifert)
Nitrate: 5 (Nyos)
Phosphate: 0.03 (Hanna)
pH: ranging from 7.8 - 8.1 night to day
I did a big water change of about 35% a week ago and lowered my Alk to 8.0 thinking maybe higher alk could burn the tips and things started to look up but now they are taking a dive again. about 25% of the acros are burning at the tips and not looking good. A few are good size mini colonies grown from little frags. It seems to just come all of a sudden. I did add a CO2 reactor to my skimmer air inlet which has raised my pH to 8.1 - 8.3 night to day a couple weeks ago thinking this might help but still having issues.
More info on the tank:
Two Gyre 250s for flow
Reef Octopus Varios-6 return pump
Vertex Omega 180 skimmer
Spyglass carbon reactor with ROX carbon (only use about a cup a month based on BRS recommendation on my tank size)
Two 7" 200 micron filter socks
Orphek V4s for lighting
GHL 2.1 doser to dose Alk and Cal
Only other thing I add is the KZ Coral System package of amino acids
Everything was doing so well and then all of a sudden they are dying with no changes made to the system. Only thing added since this started happening is the CO2 scrubber. Please help me with ideas on how to combat this. Thank you.
Alk: 9.0 (Hanna and Salifert)
Calcium: 420 (Salifert)
Mag: 1350 (Salifert)
Nitrate: 5 (Nyos)
Phosphate: 0.03 (Hanna)
pH: ranging from 7.8 - 8.1 night to day
I did a big water change of about 35% a week ago and lowered my Alk to 8.0 thinking maybe higher alk could burn the tips and things started to look up but now they are taking a dive again. about 25% of the acros are burning at the tips and not looking good. A few are good size mini colonies grown from little frags. It seems to just come all of a sudden. I did add a CO2 reactor to my skimmer air inlet which has raised my pH to 8.1 - 8.3 night to day a couple weeks ago thinking this might help but still having issues.
More info on the tank:
Two Gyre 250s for flow
Reef Octopus Varios-6 return pump
Vertex Omega 180 skimmer
Spyglass carbon reactor with ROX carbon (only use about a cup a month based on BRS recommendation on my tank size)
Two 7" 200 micron filter socks
Orphek V4s for lighting
GHL 2.1 doser to dose Alk and Cal
Only other thing I add is the KZ Coral System package of amino acids
Everything was doing so well and then all of a sudden they are dying with no changes made to the system. Only thing added since this started happening is the CO2 scrubber. Please help me with ideas on how to combat this. Thank you.