k now my nem is letting stings of goo come out and kinda folding back in........... im really starting to get worried. Noe my scarlet crabs over the past few days have faded from the billiant bright red coloration to more of a duller red. My last astrea snail died and i see a nassarious on hte glass and his foot has taken on a black coloration. Fish seem to be fine.... i dont feel good about my tank right now any response is helpful.

Is his mouth gaping open?

What are all your water paramters?

temp
ph
alk
ca
ammonia
nitrite
nitrate

The tank has been running for about 5 months? What kind of lighting? Any clowns beating it up?

Your tank is really too young for a nem.

ok im doin water tests now, fixing to do a 10 gal water change, temp is 74 even, ph is 8.3, i dont have alk or cal or copper test kit, ammonia is zero, nitrite is zero and nitrate is between 10 and 15. Im running a metal halide / pc combo totalling 380 watts so its like 5.52 watts per gallon or something like that. The nem is about 3/4 extended or whatever you want to call it and his tenticles are bubbled at the top, i cannot see his mouth. When i attached my remora i had to use a fitting to connect the inlet of hte remora to the hose that goes to the mag drive and it was metal, it looks like brass to me but im no handyman. I took out the mag drive with the hose and the fitting. The tank is still young im approaching 6 months running. When i could see hte nems mouth last night it wasnt open but he was outstretched completely and remained that way until i fell asleep at least at like 1 am. When i woke up he was sucked inside his trunk or whatever, came out as soon as i put the lights on. I have noticed that the salinity is high about 1.025 and when i put my other fish in the tank the water from the store was i would guess around 1.023 to 1.022. Schig whats your email and i will email you pics

k i sent 5 pics , temp in hte summer reached 82 but with my light it doesnt drop below 74, im kind of worried aobut over heating in hte summer.

One more thing. If he's been under lower lighting than what you have over your tank, that could be pissing him off. He might need a week or two to get used to the Halides. Maybe raise the lights up a few inches and shorten the photoperiod.

ok so update..... one step forward two steps back..... the fitting that went into the inlet to the skimmer and outlet from the pump was indeed made out of copper. It was in the tank for about a week. Would it b best to just stick a stick of dynamite in it and light the fuse....