Lighting II

[Rockhead21564]

I have a freind that has a corcea clam in a 55g with 220watts of blue and white atinic flour. I talked him to at least adding another 2 power compacts @96watt each which would give 412watts total= enough? He won't go MH. Is his clam going to bleach? Thanks

 

[Peabody]

You neverknow, sometimes some people can pull off a maxima or crocea with PCs. But, every one I've personally known has had theclam die between 6-12 months. Have him put the clam as high up as possible and keep chemistry stable. He might get lucky.

 

[kevensquint]

I can never understand why some people insist on trying to take the scenic route, instead of going straight downtown. A canopy full of fluoresent tubes that ends up being mediocor, or a couple of MH's giving you the freedom to grow just about anything without worries. The answer is just too easy to overlook.

 

[mbbuna]

<a href=showthread.php?s=&postid=6351691#post6351691 target=_blank>Originally posted</a> by kevensquint
I can never understand why some people insist on trying to take the scenic route, instead of going straight downtown. A canopy full of fluoresent tubes that ends up being mediocor, or a couple of MH's giving you the freedom to grow just about anything without worries. The answer is just too easy to overlook.

i might copy and past that for later use

 

[gussy]

I'm worried about heat. Maybe you guys can help me out.

Tank is a 55 tall (36x15x24) and with a DSB of 4 I'm left with 20" height. Have a canopy that gives me enough space to put in a 7" fixture with about 1" space between the fixture glass and the acrylic cover. The space between the acrylic cover and water is another 1".

If I put in a 32" long and 7" high fixture with 2x150 MH + 2x65 PC. Would this be enough for clams? I could also make a mound of sand or rocks to raise the clam higher. How about if the MH are 2x70 instead of 2x150? How much do temperature increase are we talking about? I live in cold SF and the tank is in the ground floor where the room temperatue is usually 70 and will only get to 74 for a few days of the year. I also have a 29 gallon sump that normally has about 15 gallons of water on a 5" DSB.

 

[gussy]

Sorry for the multiple postings with too many questions. I'm trying to re-arrange me livestocks between tanks to match the lights.

How about this one? On my 20 gallon with 2x40 PC I can replace the fixture to 3x36 PC or 6x36 PC. Would this work? I can't use MH on this tank. The distance from the sand to the light is 12". Of course I could also do a mound of sand or rocks to raise the clams.

 

[Peabody]

Gussy, the 2x150 would be great, but no less. the 70w wouldn't penetrate enough. But, I'd have to say, from personal experience and witnessing others lose clams, a firm no on the 20g. With a couple of 65w bulbs you could maybe keep a squamosa, but even when I had 2x65 over a 15gallon short my squamosa wasn't happy seeming. I threw a 175w MH bulb over it instead and he was "happy as a clam" and grew a ton with great color until I upgraded. Throw a 150w pendant over your 20 and you could keep any clam you wanted, light speaking

 

[gussy]

Thanks...I think I'll just put the clam on the 55 gallon as I'm going to get the MH + VHO/PC on it. I tried to put a 175MH + 2T5 on the 20 and it looks really bad.