Help: SPS bleaching and STN

I wish that was an option. I have a large coast to coast external overflow on that entire back wall so it limits me to placing the MP10's at the bottom half of the tank. I had thought about building my rock up with PVC and laying them on egg crate, then it would give me that velocity.

What do you think? Will this look tacky? My SPS will then be about 6" from the surface.

I am going to buy a RODI unit from BRS. Just looking at the cost of RO in my city, it's going to be $40 just to do a 40 gallon water change. That's not including the ATO water of 15 gallons a week.

Also going to try some BRS GFO in a media bag, in my filter sock. But I'll put it on the output of my protein skimmer.

I really want to get a way from carbon dosing entirely. It's scaring me off.

I am thinking it was a combination of ALK ( initially at 7 and then I slowly raised it to 8), and bad water quality. Lesson learnt, listen to people's advice as they have been there, done that.

[daniella3d]

If you are paying for your water, then you might want to consider a RO unit that is low on water usage like this one, which will waste no water, so cost much less at the end:

http://www.costco.ca/Premier-Zro-Pur...100016456.html

If you are using tap water I would start with using RO. This is probably your problem.

Originally Posted by ChizerBunoi

I am going to buy a RODI unit from BRS. Just looking at the cost of RO in my city, it's going to be $40 just to do a 40 gallon water change. That's not including the ATO water of 15 gallons a week.

Also going to try some BRS GFO in a media bag, in my filter sock. But I'll put it on the output of my protein skimmer.

I really want to get a way from carbon dosing entirely. It's scaring me off.

I am thinking it was a combination of ALK ( initially at 7 and then I slowly raised it to 8), and bad water quality. Lesson learnt, listen to people's advice as they have been there, done that.

Thanks for the link Daniella. That was the main reason why I didn't purchase a RODI in the first place. It just wastes so much water. I'll check out that unit you posted.

[cblair]

If you are running zeovit to lower nutrients then definitely get your dkh down to 7-7.5 and keep it stable there. I started zeovit in my tank 2 months ago and I can say that higher dkh than that you will start noticing burnt tips on some acros which will lead to stn. That's just my experience so I would try to work on lowering your alkalinity.

[Myka]

Originally Posted by ChizerBunoi

What do you think? Will this look tacky? My SPS will then be about 6" from the surface.

Yeah, it probably will. If you don't have something laying around you could use (like a cheap Koralia that you can put the back magnet into the overflow) then just try the RO. Your SPS are fairly small still, so it may not be a flow issue. As they grow you're probably going to get some trouble. If you see a good deal on an MP40 I would probably pick it up if I were you and replace two of the MP10s with one MP40.

I am going to buy a RODI unit from BRS. Just looking at the cost of RO in my city, it's going to be $40 just to do a 40 gallon water change. That's not including the ATO water of 15 gallons a week.

Ouch. Yeah, that's a good plan. Talk to someone in your area that knows RO/DI systems really well to figure out which filters types work best. Here in Saskatoon we have chloramines to worry about, in Alberta I know many areas have really high iron content. I have no idea how that may or may not affect RO/DI systems. If you don't know a fish RO/DI expert, ask a drinking water company and just tell them you're looking at options for drinking water. They will tell you what you need for stages, and then buy it at BRS for 1/4 the price.

I am thinking it was a combination of ALK ( initially at 7 and then I slowly raised it to 8), and bad water quality. Lesson learnt, listen to people's advice as they have been there, done that.

I don't think it is the alkalinity. Tanks that run biopellets are prone to RTN if the alkalinity is above 8 dKH. Zeovit tanks are also supposed to run around 7 dKH. Natural seawater averages around 7 dKH. My reefs both run 7-8 dKH.