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Its hole-In-The-Head Disease, also known as Head and Lateral Line Erosion (HLLE( common in tangs and other saltwater fish. As the name states, this disease affects the lateral line organ and skin covering the head and face of the fish. There is no specific cause but generally attributed to poor diet, use of carbon heavily, water conditions and even stress. My suspicion here is diet.
While carbon reactors have been implicated in contributing to the breakdown of the carbon, the ROX product doesn't seem to be an issue like soft carbon is....I just ordered selcon, and what you said about carbon? I actually started using a BRS mini reactor with rox.8 around 2 weeks ago. I put a gate valve on the return to slow it down to about the same speed as a fridge will fill a glass of water. I’ll stop that now.
Geez your homing in on the things I’ve done before I’ve told you! Wow I found out about the softer carbon breaking up and clouding the water in display the hard way and is why I’m now using the rox. The normal kind rolled around in there that first night and the next morning I stopped it and replaced socks and floss a few times. It broke carbon down to fines. Would that have caused this for my tang?
Hi,Hi I see lots of posts about no one seeing an issue with HLLE that they can contribute to running Rox 0.8. I’ve noticed recently that it appears my tang does have HLLE. I’ve had him for nearly two years. I’ve never used any carbon other than Rox 0.8 and been running that for a year. I did have an ich outbreak and he did go into QT with copper, but that was also several months ago. I just noticed the HLLE within the last few days. Two possible points of stress are:
Added a bristletooth tang but never see any issues between him and the tang
Had a Calcium spike occur in Jan, (long story) and have managed it down to the 450 its now at. During that time, there was some ups and downs in Alk, never more than 1 dkh in 24 hours as I’ve been testing every other day to daily since that spike.
Always feeding him nori daily, as well as food soaked in selcon. Current parameters are:
CA 450
ALK 9.3 (Red Sea) or 10.1 via (Hanna) trying to figure this one out
Mg 1360
Salinity 1.025
Nitrate. 4ppm
Po4. 0.02
Have not tested for a grounding issue, need to figure out how. Otherwise any thoughts?
Hello Jay,The fish in that picture lived a long time, but the fins never grew back.
Jay
Actually, in the survey I did a number of years ago, there were a few submissions that anecdotally implicated ozone as causing HLLE. I discounted those because so many of the survey respondents were public aquariums using ozone that causation wasn’t a sure thing.This is anecdotal, however I have noticed since adding ozone that my yellow tang’s HLLE is healing. I’ll check my pics to see if I can find proof and post pics. I don’t use carbon and none of my other tangs/angels have it, just this one particular yellow tang.
Has anyone else noticed this as well when using ozone?