Poly Extension ?

[Theo15]

My tank is doing great and all my corals are growing but why don't I have polyp extension during the day they only come out at night but there is clear signs of growth and no color loss?

 

[ironman20725]

Following! I have the same problem.

 

[recess62]

Me too

 

[ironman20725]

What lights are everyone using? I'm using Chinese black boxes

 

[Theo15]

What lights are everyone using? I'm using Chinese black boxes

I use a 4 bulb t5 fixture, two blue plus , I aqua blue special and one purple plus, I've been to a few lfs and they told me that it's normal to only have extension at night but I need more clarification, I have growth and I do see polyps at night but little to none when the lights are on !

 

[ironman20725]

Same

 

[Theo15]

Same

I was going to do led but I couldn't find a proper hanging fixture so I went t5, I was told they give better growth anyway ,my tank just doesn't have the pop !

 

[ironman20725]

I went with led, simply for the price

 

[Theo15]

I went with led, simply for the price

Really?! I find t5 way cheaper !

 

[ReeferMaddness843]

Kessil led and 4x 4' ati t5 bulbs. Same here. Nighttime has great extension, daytime next to none, except one Millie that's always out.
Daytime:

Nighttime:

 

[ironman20725]

Really?! I find t5 way cheaper !

Mine where 89 a piece

 

[Theo15]

Mine where 89 a piece

I paid like 160 for the fixture ,I got it off eBay and just bought ATI bulbs

 

[Theo15]

Kessil led and 4x 4' ati t5 bulbs. Same here. Nighttime has great extension, daytime next to none, except one Millie that's always out.
Daytime:

Nighttime:

My millie never has extension but it has grown, I don't get it why...

 

[Tahoe61]

What fish types do you house?
The Acropora look pale, have you considered increasing the nutrients to the tank?
My Acropora show active PE night and day. You have some smoother skin acropora that may not show as much PE but that millipora should show PE all the time.
Have you checked for Red Bugs?
Did you rule out water chemistry as the cause?

 

[JustSomeGuy]

I have the same problem with a blue millie, never see the polyps out at all not even at night but it showing slow growth. My tricolor has beautiful green polyps during the day but not alot of extention til night time. My red planet, red Millie and green hulk Millie all have crazy hair going on. I am running radion xr30 g3 pro with my own modified sps ab+ schedule. I am looking to add t5 supplement lighting but that will be for another topic.

 

[Theo15]

What fish types do you house?
The Acropora look pale, have you considered increasing the nutrients to the tank?
My Acropora show active PE night and day. You have some smoother skin acropora that may not show as much PE but that millipora should show PE all the time.
Have you checked for Red Bugs?
Did you rule out water chemistry as the cause?

I do have a flame but he doesn't bother any coral I feed often , my nutrient was way too high at one point and there was alge everywhere and the tank broke out in cyano eventually , I have since corrected the problem but I still don't have extension

 

[arman]

I read a thread and he had the same problem because of this beautiful creature.Maybe sth is bothering them during daylight.

 

[Theo15]

I have the same problem with a blue millie, never see the polyps out at all not even at night but it showing slow growth. My tricolor has beautiful green polyps during the day but not alot of extention til night time. My red planet, red Millie and green hulk Millie all have crazy hair going on. I am running radion xr30 g3 pro with my own modified sps ab+ schedule. I am looking to add t5 supplement lighting but that will be for another topic.

When I first got my millie it had plenty extension but not anymore and my other acro only at night

 

[Theo15]

What fish types do you house?
The Acropora look pale, have you considered increasing the nutrients to the tank?
My Acropora show active PE night and day. You have some smoother skin acropora that may not show as much PE but that millipora should show PE all the time.
Have you checked for Red Bugs?
Did you rule out water chemistry as the cause?

The pale looking acro is an ice fire ,it's just the lighting

 

[arman]

Though he said there is no problem with that and his corals are growing very good and are healthy.