Using a hydrometer? Maybe salinity is off?
Cyano SUCKS!!!
Any contractor will tell you that the perfect recipe for mold is moisture and sheet rock. I'm sure (in a non professional sort of a way) that sheet rock dust is an organic food source for cyano but I doubt that it is the total cause of your cyano..
As for sand, I like the wet product because it seems to set up denitrification more quickly than the dry product- this from my own experience.. I've always used a smaller grain size, like that of the aragonite special grade reef sand..
You know my stance on old sand.... I'd remove all the old stuff before throwing new sand down.. I wouldn't want to trap old sand underneath new stuff..
Your nutrient levels are pretty under control... I'd wait on the chemiclean.. Do your major changes, let the tank settle down for 4-6weeks and see where the cyano is.. If it's still out of control and your n and p are still IN control, then revisit nuking the cyano..
This is how I would tell somebody to do it...... Not sure I would have the patience, myself...
i dont think the sheet rock is a major contributor here. id say pull the sand completely. pull all the rock, put it in bins/rubbermiads using 50% of the tank water and get all the rock shook up in the bins with power heads to dislodge any detritus in the rock. fill the tank up with 50% new water, BB and toss all the rock/ coral back in. run carbon and get more flow in the tank.
i was going to say cook your rocks but i was unsure how many corals you still have alive. if you just did a good size water change once a week and wet skimmed i dont think you would have a problem with nutrients by doing what i said.
i never understand why ppl will battle problems like this for so long. if you got the transition to BB done and over with months ago when your problems started, at this point in time youre tank would more than likely be thriving. sure its a little work at first, but youre looking for long term success. youve been having this problem for a while now.
and rather than spending the money on new sand and what not you could spend it on some powerheads for more flow.
http://www.caribsea.com/caribsea/itempage_marine_substrates_aragalive.html
The one at the bottom..
Michael, at this point, you must be frustrated as hell with the condition of your tank... Actually, I'm pretty certain you are because mine looks about the same as yours right now and I want to throw a hammer through mine...... But I digress..... If you hope that the old sand won't come back to bite you in the butt, why not be certain that it won't come back to bite you by removing it completely from your system? Now is the time...
I wouldn't worry about loosing the micro fauna, they will grow back and the wet sand is already seeded with bacteria.. However, I understand you wanting to keep some of the old sand for continuity, so if you do keep some, I'd say mix it in with the new sand, don't just put the new sand on top of the old sand. I think you run less risk of smothering the old sand this way..
I'm surprised that while using pappone and rowa your corals are becoming more pale... I would think that with measurable p and the addition of a great food source, the acros would do fine.. But every tank is different.. No harm in removing the rowa and watching what happens, imo..
Btw, enjoy the solitude when the family is away but don't forget to miss them a little as well![]()
I can't say I disagree with suzig... But I know you are a believer in dsbs, as am I..
There are just as many successful dsb tanks as there are bb tanks so go with what you know..
Too bad you can't put the dsb in a remote location.. This is what I have done and left the tank bb
not going to read the entire thread. i only need first and last page. enjoy your cyano :dance:
Using two of them and get 1.025 to 1.026 sometimes it gets lower after adding top off water and sometimes it goes a little higher when top off water is needed. Why? Does high salinity cause red cyno?
Michael