SPS Growth Puzzle

[shrimpchips]

Any stray voltage?

[Aquattro]

Originally Posted by shrimpchips

Any stray voltage?

Not that I can feel with my hand

[StirCrazy]

Originally Posted by Aquattro

Not that I can feel with my hand

try it by holding the return line with your left hand, stand on your right foot, and stick your tongue in the water.

[Aquattro]

Originally Posted by StirCrazy

try it by holding the return line with your left hand, stand on your right foot, and stick your tongue in the water.

Like I could pull that off without falling in!!

[Doug]

Originally Posted by StirCrazy

try it by holding the return line with your left hand, stand on your right foot, and stick your tongue in the water.

Or like me, put your head close to the halide reflector and then stick your hand in the water and see if an arc forms between your forehead and the reflector.

And as I cant keep acro,s alive, I have no advice on why they dont grow. They grew fine in my 90g with a pair of 250,s but not with T-5,s. However when I was laid up, the frags I had kept were in my 20g with cheap T-5,s and all though browned out, grew well. I,m assuming because the nutrients levels were increased, from the lack of filtration, {no skimmer}.

I have done things the same and had failure and visa versa. So who the hell knows. Many who have lost their sps, seem to have absolutely no explanation for it. You seem to be doing the exact same as before, but must be some little thing thats not the same, that affects the growth of your corals. Esp. with someone of your experience.

[One_Divided]

Hey Brad, I recently added more fish and started dosing MG every once in a while. I've really noticed growth take off and pigments deepen in the last 2-3 months.. When was the last time you checked MG? I have a test kit if you'd like me to bring it over some time.. I know it's one of the more expensive ones..

[Skimmerking]

I agree with divided I started to add more Magnesium and the SPS when I had them were growing fast.

I kept my mag at 1450

[Aquattro]

Ok, update and observations..

pH - 8.0
Mg - 1350ish
NO3 - non detectable
PO4 - 0.04
Ca - 450
Alk - 4.0

Ca and Alk are a touch high, but not enough to affect things and in fact are the values I used for years with great growth.

I notice that I have to clean precipitate from my pumps and power heads every 3 months. Any loose sand in my sump is solidified. Even my mesh bag with 1c of carbon had solidified.
Something is whacked with the chemistry in the tank, and not sure what.

Anyone have any experience with precipitation? I've added a small tray of sand to my sump to see if and how long it takes to solidify.

My previous sandbed turned into a slab of concrete that I removed in large sheets, some I couldn't even break up by hand.
WhenI ran a phosban reactor, even that media solidified.

Hate this freakin' tank!!