Originally Posted by Guillaume
Hi Sunny, The fan in my MH fixture was misaligned and was blowing less air. It stayed like that for a few weeks and I readjusted it a few days ago.
In fact, I'm having a sudden coral decoloration (Monti, Pinaple) and less expansion (euphelias, mushs) since two months. I think it is the MH bulb change (in January) that did it but reading your discussion on cooling fan, I was questionning this avenue too.
I'm running on 14K 150w Coralife, which I'm still not sure. I was prefering my previous Giesemann which was no longer available where I ordred the bulb. I run also on the same fixture two PC 65w Coralife actinic. Would you suggest to put another type for these MH bulb and PC(using the same fixture)?
Tx!
G
Are the bulbs your are using single or double ended?
Is this a fixture or a retrofit kit?
What are the dimensions of the tank?
What are the parameters of the system? Temp, CA, ALK, PH, PO4, etc..
Im just trying to figure out some solutions but I need a little more info. A picture would also help. :reading:
Hi Sunny,
Thanks offering to check. Some precisions:
- Parameters: Temp:79, CA:400, ALK: 5meg/l, Ph:8-8,1, PO4:<0,05mg/l, SG:1,026, NA: 5-10. Every param stable in time.
- Tank: 36X12X18, 33g
- Lighting: Coralife fixture,
this one
- Bulb: 150W 14K double ended Coralife, replaced two months ago(had 12k Giesemenn before). This is when I got the coral reaction but when it is also when the fan became unaligned too (which I realigned 3 weeks ago).
- Also 2x65w PC actinic 420nm and no change to water flow with koralia 2 (600gph) and aquaclear 50 (270gph).
- Seeing reaction I decreased MH time from 8h/day to 2,3,4..to now 7h/day. Trying to reacclimate but I suspect it will take time.
- Feeding very sparse with 2 fishs(osclaris+6 lines wrasse) every other day.
Some pics:
Never seen my pinnaple fading white like this in 6 years. Monti was bright green for the 3 months before bulb change and was fast growing. Now he is brown and slowed much its growth.
<a href="http://s681.photobucket.com/albums/vv173/gouaill/?action=view¤t=Dsc05577.jpg" target="_blank"><img src="http://i681.photobucket.com/albums/vv173/gouaill/Dsc05577.jpg" border="0" alt="Photobucket"></a>
Euphelia much less expanded than usual since same time.
<a href="http://s681.photobucket.com/albums/vv173/gouaill/?action=view¤t=Dsc05578.jpg" target="_blank"><img src="http://i681.photobucket.com/albums/vv173/gouaill/Dsc05578.jpg" border="0" alt="Photobucket"></a>
BTW I'm working on a Miracle tank 36X20X20 project with 33g sump(+refugium ATS) that may help on NA. Maybe replaceing one of those 2 actinic may add a new spectrum opportunity. I'm thinking on returning with Giesemenn too.
So, do you see this as a new bulb reaction, bad cooling from the fan, etc ?
Thanks for your comments.
G