SPS lighting

[duckmans]

Thanks

250w MH about 8 inches off the water. Do 8000k bulbs and use actinics for a good balance.

Thanks for the help on the lighting questions answered

 

[duckmans]

How important is A stable PH and can it get down to 7.9 without killing everything SPS wise?

 

[amashun]

hey mate, i use 250W for my 6'x2' tank and found sps grow pretty well. so i think 250W should be fine.

However, if you don't want any supplement lighting (t5) then i personally would go 400W 20K MH for the blue look and the punch of PAR.

HTH

 

[cdbdis]

Have to agree w/ amashun...I'm running 400w 20K XM's on a 27" deep tank and it's perfect. I've gone through 150 - 250's to get to this point.

 

[apollothesun]

with that much sun in your area i would look into solar tubes beamed down into your tank from your roof, kinda like sky lights and supplement with t5. that is if you have the time and skills

 

[duckmans]

Light

Need more info. Like your tank dimensions and wattage of the halide.
For example, if your light is 250 watts and is 4 inches off the top of a 20 gallon tank, then you probably have to much light. Or the opposite, a single 250 watt light on a 180 gallon tank would not be enough.

I have a 24 gal with 150W 20K Halide sun pod about 7 inches above the water line. Also on that sun pod there are some atininc leds.

Mike

 

[Chichas01]

Probably about right if your trying have SPS I think.