LED for Crocea Clam

[mattsilvester]

Dear All,

I'll start by confessing that I don't know as much as I should about lighting, and read in this forum that actinic light is useless for clams etc. in terms of providing growth etc.

I have LED lighting. It is a Zetlight ZT660. I would tell you the relevant specs, but I don't understand enough to do that but from what I can gather from the website (http://www.zetlight.com/index.php/products?id=46) it is 200W and with quite good quality bulbs, and at about 12-16" below the surface the PAR rating is about 600-700 (in the middle area under the LED fixture). The clam is currently about 12" below the water surface, if you count from the top of its mantle.

I would really appreciate if some of you with the technical know-how would comment on the type of lighting that I have.

Many thanks in advance.

 

[Art13]

With the acceptation of the green and orange leds, the rest of the led's have mostly the same amount of other colors that my current led setup has, and I don't have any issues with my maxima and dersa, don't have a crocea but i'd imagine the lighting is about the same needed as a maxima.

 

[mattsilvester]

That's encouraging. Thanks for your reply.

If the lighting is insufficient, will there be a slow observable decline? If so, what would the signs of decline be so I can take corrective action.

 

[Art13]

My guess is that it would slowly recede into it's shell and wouldn't open as much as the day before, there are other signs but i've not lost or had a sick clam yet (only have 2) so i wouldn't be the best at giving advice in that area. If it helps, i have 90 degree optics, fixture is 2 feet off my tank, clams are below the surface somewhere between 18 to 24 inches, maxima has been there for over a year now and doing fine, dersa has been good there for the last 4 months or so. max out blues at 75%, whites at 35%.

 

[mattsilvester]

FYI - So far the clam seems to be doing very well. It has very firmly attached to the DIY cradle and is exoanding more and more each day.

 

[Art13]

Glad to see him working out for you, crocea is the next clam on my list, assuming i have room for him when the time comes, lol.