help losing sps

Alan600 · Oct 15, 2016

I been losing my acros this whole pass week and can't seem to figure it out . They stn from the base and go up . I been checking parameters and they are stable . I have no polyp extension . What I notice is once lights go off and the next morning I check I lose more and more frags . I check for pest or flatworm dipped a few with bayer and have not seen anything . Any ideas what it could be ?
Alk8.4
CA 420
Mag 1240
Po4- .04
No3 -2

Macdaddynick1 · Oct 15, 2016

Do you have a picture of your set up. Please post. That's called RTN if you lose the entire frag. Caused by shock usually , like did you change your lights recently, or fed way too much or added gfo to bring down the phosphates too fast. Or did you get a new fish. Check your tds. Basically what I'm trying to get at did you change something recently. If not try to see if there's stray voltage or large temp spike. Also how's your circulation? And what test kits are you using

Alan600 · Oct 15, 2016

I have not changed anything it's all the same . Some of them are stn I been losing a frag every 2 Days . I don't run gfo and I don't know about the voltage but I can stick my hand in the tank and I don't feel any shock . My tds on my water 3.2 . It's a 100 gal with a mp40 and mp10 and 3 2000gph power heads . I use selfert for alk and red sea for the rest . I'm temp is at 82

reeferfoxx · Oct 15, 2016

Any algae?

Alan600 · Oct 15, 2016

I did have some but I add a algae Turf scrubber all that went away .

Macdaddynick1 · Oct 15, 2016

Tds measures how clean the RO water is , it measures in whole numbers as far as I know, but if your tds is anything above 0 that's what most likely causes the STN and RTN

reeferfoxx · Oct 15, 2016

How long have you been using the turf scrubber?

Alan600 · Oct 15, 2016

I had it for 2 weeks and I always had 5 tds going in to my tank and never had a problem I've had this setup for 3 years now

Alan600 · Oct 15, 2016

reeferfoxx · Oct 15, 2016

What are you dosing ca and alk with?
Last water change?
Are you watching pH between morning and night?

Alan600 · Oct 15, 2016

Esv and about 3 days ago . And I haven't checked ph

luke33 · Oct 15, 2016

Could be aefw, dip quite a few sps. Dip some healthy as well as some that are struggling. Have you used some test solution to see if your salinity is high or low?

Graffiti Spot · Oct 15, 2016

Why would you have any dissolved solids in your make up water? Are you not using any di resin? If you are using water that isn't 0 tds bad stuff will build up over time. Depending on your water source it could show within weeks or could take much longer. Sps tanks should always be ran with 0 tds water for top off.