H. Magnifica on the move

[swiseman]

My 3 year old H. Magnifica has moved to the top of the glass. Any ideas why it might do that. The tank is very stable and predominately a very healthy SPS tank. The lighting consist of 3 x 250 Reeflux 10,000K and 2 x 110 VHO actinic. Temp, Ph, Salinity, Ca and DKH are very stable as well. The bulbs are all 6 months old. I moved the anenome back to its column on Sunday, which is about 8" below the waters surface and directly under one of the halides, on Sunday evening before I left for the week. Today my wife has reported that it has moved back up today. Any thoughts as to why. Here are the specific perameters.

Temp 76 - 78 F
DKH 11.2 (Salifert)
Ca 420 (Salifert)
Salinity 1.025 (Refractometer)
Ph 8.0 morning 8.2 by end of day (Pinpoint Ph Controler)

I don't really test anything else as the tank is stable and there is no algae to speak of.

 

[Amphiprion]

Who knows. Has the water current in the tank changed any? Any powerheads moved, cleaned, etc.? Has anything encroached close by? I don't know why, just throwing out ideas.

 

[GSMguy]

6 month old bulbs could do that

 

[swiseman]

If they loose that much PAR in 6 months I will looking for a new brand.

 

[Flighty]

Mine do that when the lighting is too blue. you could try turning off the actinics just to see if it helps him stay put. I bet it is a shift in the bulbs.

 

[zoomfish1]

It seems change in spectrum is the 1st thing to send them on a walk-a-bout, current a close 2nd.