SPS under Sunpod 150w

[isabella_b]

I have a few questions about keeping SPS under my Sunpod.

Tank info:
24 Gallon Aquapod
150w Sunpod Phoenix Bulb 14k

Parameters:
Amonia: 0
Nitrates: 0
Nitrite: 0
pH: 8.0
Calcium: 360ppm (dosing as we speak)
Haven't checked phosphates but I don't see algae

Filtration:
Mediabasket with chemi pure elite, purigen, and filter floss

My SPS is about 6-7 inches away from the MH. I have an echinata frag that has completely turned brown, a large green birdsnest that is for the most part green but a bit brown, and a garf bonsi that is a little brown except for the tips. I can see polyps on all of them so I'm not too sure what the problem is. My other frags are doing great though! Anyone have any thoughts?

Much appreciated!
Isabella

 

[reefmutt]

Let us know what your po4 level is..

 

[Touring]

Are you not testing for alk or mag?
what's your flow like?
When was the last time you changed your media out?

 

[jroovers]

Are you not testing for alk?

Yes, that would be my first question too... alkalinity would be #1 test for sps other than calcium and nitrate. Also, if your coral is brown, typically means too much nutrient, phosphate could be part of that... does anyone you know have a hanna checker?

 

[isabella_b]

Haven't checked alk or mag yet. Maybe I'm over feeding? I have the frags on moderate to high flow and I changed the medias about 3 weeks ago. I change them about every month or so and I change the filter floss every couple of days. And I don't think anyone I know has a Hanna checker, what is it? Haha

 

[reefmutt]

A Hanna checker is a type of test kit for checking mainly po4 or phosphate.
Any decent po4 test kit will do.. The Red Sea test kit or the D&D kits are pretty good for testing phosphate.

 

[isabella_b]

Yeah I need to go get a phosphate tester ASAP! Thank you for the suggestions!

 

[Touring]

You need a reef test kit

 

[9thwonder]

Make sure you know all your parameters. Alk, Cal, Mag, Phos, salinity and temperature. Make sure everything is stable and consistent before adding anything else to your tank. Good luck