Interesting discussion on salt mixing and residue. From my experience with IO, the sludge issue occurred even though I only ever added salt to water. Perhaps it had more to do with the chemistry of the fresh water coming out of our RO/DI, or with the heat from the recirc pump.
Hello pmrogers,
If you don't mind me asking.. What the dimension of your rimless QT tank?
It is so nice.
Hi
GSMclowns, the tank is 36" x 48" x 16".
So... who do you plan on staying with?
I will have large containers too and do not want to clean them out that often either.
Not sure yet. May try Red Sea Coral Pro next. I wouldn't be in a hurry to move on from Kent except that it is looking like it may have a sludge precipitation issue. Not as pronounced as IO, and not yet at all visible in the reservoir, but the flow meter on the reservoir UV has already picked up a tan film with a stucco like texture.
Paul.
Great looking tank, your attention to detail is amazing. We've got a client with a big MRC commercial skimmer running down the street from you so if you've got any questions, I'd be happy to share any knowledge we've gained running it.
FYI, We use a 5 gallon bucket that the skimmer drains into (with a float switch in it) to shut off the skimmer in the case of an overflow.
John
John, thanks a ton for the offer! I do have a few questions I'll shoot over to you in a PM.
Ok...not sure if I get it. Paul said on his old system that he would carry buckets up a ladder and dump into top of his 7' reservoir,... I have seen other threads that the owners have large/tall reservoirs also. Do they just pour in the tops and let settle in? How do they go about keeping their sg uniform so when its needed for their DT's,...do they go by manufactures spec. ie. if you use 4 160gal buckets you add 640gal of water or do they need to constant monitor their sg and say add another 1/2 bucket or so to get a 1.025sg(if thats the sg they want)...just curious how that's done.
Hi
007Bond, I've always used a fairly powerful recirc pump with an educator nozzle on it for mixing and recirculation within the salt reservoir. Regarding sg, I keep a salinity monitor on the reservoir, though this is really just a sanity check as I've never seen variation between buckets of salt from the same manufacturer.
On the update front, the coral QT bacteria and/or algae bloom has been quite a challenge. I gave it 3 weeks with no intervention other than 5gal per day water changes, hoping the bloom would pass, but it only got worse. I then borrowed a large diatom filter like you'd use to clear a medium sized pond (24" x 8"). Ran it for 4 days before giving up. The DE filter improved clarity enough to again make out the corals and even see whether the polyps were extended or not, but it didn't fully resolve the problem. It was making a real difference, though, as the morning after removal the water was again so murky the corals could barely be seen. By the day after that, the tank looked like a very healthy phyto reactor.
So I gave in and added a low flow 25W UV to the system, and also turned off all lighting for good measure. _Zero_ difference over 3 days. Quite disconcerting. This past weekend I did a 99% water change, leaving just the cermedia block and a few inches of water in the overflow. Now I wait with fingers crossed hoping that the nasty algae doesn't return. The frags fortunately seem to be fine other than lightening up a few shades. Fingers crossed that the 25W UV is enough to keep the nasty algae from re seeding the tank.