- Joined
- Feb 17, 2020
- Messages
- 23
- Reaction score
- 21
Hi!
I have an IM lagoon 25 that has been running for about 2 years now. I have this weird fuzzy growth on the rock (for about 6 months, doesn't go away on its own). It only grows in the light so its photosynthetic. It has a brownish tinge to it but also can be closer to white. It doesn't grow on the glass but did grow on the return jet a few times. The most odd thing about it is it seems to almost encrust with a white hard layer at the bottom made of what seems to be calcium? About 3 weeks ago, I tore my tank down completely. Corals and fish went in a holding tank and I hosed down my tank in the yard and completely removed everying from the glass, back chamber etc. I cleaned the rock with stainless steel wire brushes as its the only thing that can remove it and dunked them in peroxide (3%) for 5 minutes or so each. There was no trace of this stuff except the white layer it seems to grow from (encrusting stuff). This does NOT come off short of an angle grinder with a flap disk so I left it. Now it is back and I have no idea what to do. With the rip clean I also completely replaced the sand bed to really make sure whatever caused it would go. Anyone have clue what this is or what could cause it??
Params are as follows:
Ammonia - 0
Nitrite - 0
Nitrates - <5
Ph - 8.05
Alk - 8.5 dkh
Calcium - 460
Mag - 1350
Phosphates - no idea, don't have a test but run phosgaurd
Algae or bacteria or whatever:
Full tank shot:
I have an IM lagoon 25 that has been running for about 2 years now. I have this weird fuzzy growth on the rock (for about 6 months, doesn't go away on its own). It only grows in the light so its photosynthetic. It has a brownish tinge to it but also can be closer to white. It doesn't grow on the glass but did grow on the return jet a few times. The most odd thing about it is it seems to almost encrust with a white hard layer at the bottom made of what seems to be calcium? About 3 weeks ago, I tore my tank down completely. Corals and fish went in a holding tank and I hosed down my tank in the yard and completely removed everying from the glass, back chamber etc. I cleaned the rock with stainless steel wire brushes as its the only thing that can remove it and dunked them in peroxide (3%) for 5 minutes or so each. There was no trace of this stuff except the white layer it seems to grow from (encrusting stuff). This does NOT come off short of an angle grinder with a flap disk so I left it. Now it is back and I have no idea what to do. With the rip clean I also completely replaced the sand bed to really make sure whatever caused it would go. Anyone have clue what this is or what could cause it??
Params are as follows:
Ammonia - 0
Nitrite - 0
Nitrates - <5
Ph - 8.05
Alk - 8.5 dkh
Calcium - 460
Mag - 1350
Phosphates - no idea, don't have a test but run phosgaurd
Algae or bacteria or whatever:
Full tank shot: