40G lighting question
Hey all!! Im new to this forum but have heard it's one of the best on the web. First off I would like to say that I am not a newbie to the aquarium community nor am I an expert. Any who, I have a question about my new 40 G. tank.... the dimensions are 36"x18"x16". Let me preface this by stating this will be a FISH ONLY tank. No live plants what-so-ever. I alread have a 20 gallon heavily planted tank with DIY CO2 and fert dosing and just want something easier for my fiance and I to enjoy in our new place. I will be running a Rena XP4 with Tahitian moon sand, natural rock formations and caves made of slate/bed rock (and a few fake plants for color and to appease the fiance), lastly it will be stocked with:
3 panda cories
4 peppered cories
1 rubberlip pleco
5 amano shrimp
5 black neons
1 regular neon (adopted from my brother, soon to be a school of 5)
2 siamese flying foxes
2 MTS (malaysian trumpet snails)
I am interested in getting an LED fixture for this tank but have some questions/concerns:
1. I am looking into a 600 lumen fixture its actually the Marineland Double bright LED fixture 24"-36"
and want to know if this is too much light for my tank. IE. will it cause algae problems... I know algae will grow if I do not care for the tank which i do on a regular basis but my job has me leaving my tank for 24-48 hours at a time. It will be on a timer that runs for 6 hours a day. I am only asking because I have no experience with LED fixtures (my current tank runs a hagen GLO T5 HO 2x24w).
Any help will be greatly appreciated.
P.s. I am looking into that fixture because that is what my LFS has as far as freshwater LED. And I do very much like the 3 lighting options, daylight/lunar/off.
600 lumen is not a great deal of light I would image you could get away with 8 maybe even 10 hours with out alot of algae growth, remember a little algae is fine. Now lets compare that to your current tank 2x24w T5 high output bulbs, I believe these bulbs will average about 1800 lumens each so that means you have 3600 lumens over that tank, so the LED fixture will put out about a sixth of what you currently have over your 20.
Also remember just because it has a lunar function doesn't mean it should be on all night, fish need sleep too, although if you have a pair (not with your stocking anyways) guarding some eggs it might be just enough to help them through out the night.
Thank you for your reply and for answering my question. I do know that some algae is a good thing and am not afraid of a little algae. I just want to prevent huge algae blooms.
And in response to the lunar function, yes I will not be having it on all night, I just like the look of the lunar lighting and it may stimulate some of the inhabitants to come out more frequently.
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