75 gallon lighting need help
Im in the process of starting a 75 gallon planted tank . My idea is to have hardscape on one side of the tank and some plants on the other half. The plants im looking at are medium / low needs.
My question is since im only needing half the tank to be lit can i get away with using a 24" dual light fixture like this Odyssea T5 Aquarium Lighting or will i need to get the quad version with 4 lights but still only 24" ?
I don't want the whole tank lit though. I'm only wanting half the tank lit so it would create a dark shaded area on the opposite side to where I want the plants.
Posted via Mobile Device
Get a dual T8, 24" for half the tank then. T5HO will be too bright, you'll end up with an algae farm unless you inject CO2 and fertalize to match.
Shop lights, or two single 24" fixtures are probably all you'll find in that size.
You could try the marineland double bright LED fixture, but I don't know how much intensity it gives off. The spectrum is in the right area though. Probably would only suffice for low light stuff though, maybe some moderate.
EDIT: I forgot to mention, you want the bulb size to be 24". Some 24" fixtures will only have an 18" bulb in it as the 24" is the total length of the fixture itself.
Thanks for the reply. I actually bought last year a 20" quad light fixture 4x18 watt T5ho for a 10 gallon tank but never got round to it. Do you think that would be ok to light half the 75 gallon ? I am planning on setting up 2x 2ltr bottles of DIY C02 and diffusing it with a powerhead, i know that wont be perfect for the size of the tank but every little C02 will help
Posted via Mobile Devic
I'm afraid I have no experience with high tech setups. I know that with high tech there is a lot more involved, you must balance the nutrients to the light and CO2.
That lighting though would be more than enough for the entire tank, let alone half. A dual T8 fixture would be on the upper end of moderate light, and that's only 64 watts total on the entire tank. You would be putting 72 on only half ... basically double the light. I'm thinking that would put you way up into bright lighting, get some sun glasses for the fish ;)
T5HO was designed for marine reef tanks where corals need the bright lighting.
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