Need some help regarding saltwater aquarium

Dashing.dayaa · Dec 10, 2015

Hello guys i am new to hobby and looking for help.basically i started my tank like 7 month ago everything was good but last week i bough small coral frags i think 3 of them are duncans and 3 of them are zoas.

1)after leds and corals my liverocks are turning to dark purple and few of them turning to dark brown
2)zoas corals are not growing
3)duncans are growing very slowly
4)i am using sump with built-in skimmer and Marineland powerful filter too

Ill really appreciate if someone help me out

I

Whatnow · Dec 10, 2015

Well its hard to tell if they are growing in only a week but what are your water parameters? and have you been using leds or is this new as well. A picture works well to if you can.

Dashing.dayaa · Dec 10, 2015

Whatnow said:
Well its hard to tell if they are growing in only a week but what are your water parameters? and have you been using leds or is this new as well. A picture works well to if you can.

I think i made a mistake in post.corals are 15 days old in my tank and i am using leds like 3 months ago and i sm not sure about water parameters.

Dashing.dayaa · Dec 10, 2015

Whatnow said:
Well its hard to tell if they are growing in only a week but what are your water parameters? and have you been using leds or is this new as well. A picture works well to if you can.

I always clean my skimmer cup in sump and my other powerfilter when i usually change water

Whatnow · Dec 10, 2015

Well for Duncans to grow its best to have over 400ppm calcium in the water. usually have to dose to get this reading. As far as the rock coloring we would really need to see a clear picture of them.

WVReefJunkie · Dec 10, 2015

Brown on liverock, usually algea. I would like to know what your water parameters are at?

Dashing.dayaa · Dec 10, 2015

Whatnow said:
Well its hard to tell if they are growing in only a week but what are your water parameters? and have you been using leds or is this new as well. A picture works well to if you can.

Take a look.corals are small so maybe you have to zoom picture.

Dashing.dayaa · Dec 10, 2015

WVReefJunkie said:
Brown on liverock, usually algea. I would like to know what your water parameters are at?

Take a look at pictures

Whatnow · Dec 10, 2015

Am I wrong or is that red cyno bacteria?

Dashing.dayaa · Dec 10, 2015

Whatnow said:
Am I wrong or is that red cyno bacteria?

I am not sure since i am new to hobby

WVReefJunkie · Dec 10, 2015

I thought that also when I looked at the Zoas. It was on them, also brown diatoms on the top of the liverock. Can we test your nitrates?

Dashing.dayaa · Dec 10, 2015

WVReefJunkie said:
I thought that also when I looked at the Zoas. It was on them, also brown diatoms on the top of the liverock. Can we test your nitrates?

How can i test it.? Cant we do anything without test?

Dashing.dayaa · Dec 10, 2015

Inoticed that there is purple algae on duncans too

WVReefJunkie · Dec 10, 2015

Test it with a Nitrates test kit, we need to determine what treatment you need. If you didn't want to test your water, you could turn your lights off for a day to see if the algea on your rocks would go away some.

Dashing.dayaa · Dec 10, 2015

Is this algae on corals duncans

Dashing.dayaa · Dec 10, 2015

WVReefJunkie said:
Test it with a Nitrates test kit, we need to determine what treatment you need. If you didn't want to test your water, you could turn your lights off for a day to see if the algea on your rocks would go away some.

If i turned off lights it will affect my corals?

WVReefJunkie · Dec 10, 2015

We need to check for nitrates to see if we could reduce the nutrients in the water by a water change routine. Are you doing water changes? Cutting the lights out will not fix a algea issue, but it would show you if you have algea on your rocks by eliminating lighting that feeds it. It will reside some.