So, for quite a few months I have had an issue in my 135g frag tank in that all polyps in the tank shrink in size. They do not melt, die, wither, or anything else, they just shrink. They even still multiply (albeit more slowly). This is the case with zoanthids, palythoas, and even green star polyps that I put in the tank. Lunar Eclipses have shrunken from 10mm to 5mm, regular zoanthids have shrunken from 6mm to 2-3mm. Color is still good on them for the most part.
Over the last six weeks I have:
- Changed carbon numerous times in the BRS reactors
- Performed two 60 gallon water changes in a two week period (last one two weeks ago)
- All params are in order- over this time period - dKH=8.5-9.5, Ca=390-420, Mg=1280-1350, 0 nitrates, 0 phosphates, Ph=8.1-8.3.
- Fish are living fine in the tank, but nothing nips at them or eats them
- I have removed some, inspected for nudis, dipped, etc. - nothing comes off except pods
- Other corals in the tank are doing fine - not thriving but doing OK
- Lights are 2 - 250 HQI - 15K phoenix
- Flow is MAG 18 on a sea swirl and one Modded MaxJet
- It ran fine for 8 months without this issue...then bam!
I am sure I am missing something here...please help as I am stumped.
I currently also run a very nice 210g with a ton of success so this is killing me.
Here is the live video of my 210g and then the 135g
210g Mixed Reef
http://myreef.thruhere.net:1025/img/video.mjpeg
135 Frag tank:
http://myreef.thruhere.net:1024/img/video.mjpeg
Over the last six weeks I have:
- Changed carbon numerous times in the BRS reactors
- Performed two 60 gallon water changes in a two week period (last one two weeks ago)
- All params are in order- over this time period - dKH=8.5-9.5, Ca=390-420, Mg=1280-1350, 0 nitrates, 0 phosphates, Ph=8.1-8.3.
- Fish are living fine in the tank, but nothing nips at them or eats them
- I have removed some, inspected for nudis, dipped, etc. - nothing comes off except pods
- Other corals in the tank are doing fine - not thriving but doing OK
- Lights are 2 - 250 HQI - 15K phoenix
- Flow is MAG 18 on a sea swirl and one Modded MaxJet
- It ran fine for 8 months without this issue...then bam!
I am sure I am missing something here...please help as I am stumped.
I currently also run a very nice 210g with a ton of success so this is killing me.
Here is the live video of my 210g and then the 135g
210g Mixed Reef
http://myreef.thruhere.net:1025/img/video.mjpeg
135 Frag tank:
http://myreef.thruhere.net:1024/img/video.mjpeg