Lighting Question

[reefy]

Originally Posted by Jason McK

It's possible your soft corals are fighting with chemicals causing your SPS to die.

When you say they are not doing well. What exactly is the problem?

20K lighting depending on your Ballast and the bulb type my not be enough light. Same with the 14K. PAR ratings on these high K lights can change drematically based on the ballast.

J

acroporas' tentacles used to be longer and the tip starting to bleach out, currently I am using 400 watts hamilton ballast and 14k bulb and the other one is 400 watt PFO with xm 20k bulb they are both 3 months old bulbs.

[a4twenty]

Originally Posted by reefy

I thought it had too much flow because my soft coral were swerving like crazy

that is why i asked

Originally Posted by a4twenty

how much and what types of coral do you have? any chance another coral is to close? are you running carbon?

so are you running any carbon??


it is a lot tougher to keep a tank with both SPS and softies and i think running carbon is a must in these tanks.

[albert_dao]

You can also allow your kH to drop to 7.0 - 8.0. That's closer to NSW levels.

What are your other water parameters? Mg, K+, etc?

[i have crabs]

1 1100 seems like a very low amount of flow in a 90g my tank is 48x24x28 so just a bit bigger than an average 90 and im in the 8000-9000gph range of flow and it seems to be just right for my needs.
if the softies are blowing all over the place what kind of flow is coming from your return? and mabey its just the placement of either the corals or the powerhead

[Jason McK]

I'm going to guess it is your bulbs. Acro's need more intense lighting. XM 20Ks are poor performers when it comes to PAR.

J

[reefy]

just add my other powerhead tonight but I realized that my pendants are only 5-6inches above the water and all my sps pretty much only 12inches under my pendants; isnt it too close to the pendant? how far do you guys usually have yours? thanks for helping out guys

[reefy]

[quote=a4twenty;337570]that is why i asked



so are you running any carbon??

yes I am running carbon.