Too Much Light?

[jah-hoeva]

My frogspawns seem to have a lot better color when they are shaded a bit. Could my light be too powerful? The larger colony in the background is shaded a bit while the smaller colony is getting direct light. They are from the same colony and color is a lot different.

Light is a 6 bulb T5, tank is 22" or so deep, light is 3"-4" above water, mounded on legs that came with fixture. Bulbs are all ATI. Getting roughly 8 hours a day with all bulbs on.



Thanks.
Joe

 

[Chlorinated]

Frogspawns generaly prefer lower light. If you are seeing color fading from the small colony..could be the start of bleaching...then I would move it someplace more shaded and see how things go.

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[IPWitan]

Do you recall what ati bulbs you are using? I also have a 6 bulb t5 fixture over a 75 gallon, which I believe is 22'' deep. I am about 4-5 inches off the water. My frog spawn frags did not like sitting in the open sand. I cannot say it was bleaching, but just less color differentiation. Moving the frogspawn to the ends of the tank made them look better, darker colors, and they seemed to extend more.

I believe I am using, front to back - blue+, actinic, coral+, blue+, purple, blue+.

I will say that your pictures seems to show that the frogspawn is quite extended, which counters the thought that there is too much light. If you had something like an aqua blue special and coral+ as the first two bulbs, it may make the front corals whiter than the ones over a blue+ or actinic bulb.

 

[jah-hoeva]

Extension is not an issue with these. Regardless of skeleton shape, they ball up like shrubs and look great. They just seemed to get darker coloration on the bottom of the large colony or where its under the ledge of the rock. (left side of large colony)

Bulbs are 3-Blue Plus, 1- Purple Plus, 1-Aquablue Special, 1-Actinic (all ATI) I also have a spare ATI actinic that I can swap in. Not sure of the front to back order.