Problem with lights and plants - The Planted Tank Forum
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post #1 of 5 (permalink) Old 07-10-2005, 10:36 PM Thread Starter
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Join Date: Apr 2005
Location: Kitimat BC, Canada
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Problem with lights and plants

Hey guys/gals,
Well it turns out my plans of getting 2 30inch PC lights for my 100gal (total of 195watts) isint going to work out. Im gonna need to get a 60inch light fixture.
I want to keep the tank low tech (no CO2) and i know the rule is 2wpg for this type of tank but..
The lowest wattage of a 60" fixture i can find and get is a 220watt PC. The flourescent hoods are too big and too expensive and PC are cheaper and smaller in height to fit under my tank hood, so thats the route im gonna have to go.
Anyway would the 220 watts be okay for my future low light plants without any CO2?
Im thinking of ways to subdue the lighting... maybe floating plants?
Any suggestions would be helpful.

PS i didnt know which topic to put this under because it involves lights but it is mostly about plants so i hope i chose right.
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post #2 of 5 (permalink) Old 07-10-2005, 10:53 PM
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Location: Monterey, CA
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Like I mentioned recently on your other thread about the same issue...

2 80W T5 bulbs would be a great way to evenly light this thing. Together with some tek reflectors and a suitable ballast this shouldn't break the bank, and it would be as small as can be to fit under your hood. Plus if you get bored one day you can add another one easily.

I think 220 Watts of PC light without CO2 will ask for troubles. With that amount light plants need good nutrition.
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post #3 of 5 (permalink) Old 07-10-2005, 11:04 PM Thread Starter
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I cant to a retrofit on my hood (stupid hood). So i have to stick to a 60inch lighting fixture.
I totally see what your saying and i understand that. And i know that 220watts would most likely be asking for trouble without any CO2. Thats why i was asking if there was a way i could subdue the light by adding things like floating plants or something like that if it would be okay.

Otherwise im gonna need to be very clever and find some way to fit 2 30inch fixtures under my hood. The lid that goes over the tank is the biggest problem if i get 2 30inch fixtures i wont be able to open the lid to get into my tank .
I have a really screwed up tank that causes a lot of frustration. Sorry if im annoying anyone with this but i just need to know if there is a way around this or if there is some sort of a nice solution that will fit under that stupid hood i have.

I would get rid of it to make things sooooo much easier for me but the hubby wants it. *sigh*
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post #4 of 5 (permalink) Old 07-10-2005, 11:32 PM Thread Starter
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Wow arent fiance's great!
He just said well since it is a 4x55watt why dont you just use 3 bulbs instead of the 4 then you will have 165watts.
Such a simple solution geez!
i read a few other threads before that said actinic does nothing to the plants. Well now im thinking HEY! i can have 3x55watt normal white PC bulbs and 1 actinic to brighten colours
How does this sound? Better?
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post #5 of 5 (permalink) Old 07-11-2005, 01:49 AM
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Location: San Jose, CA
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You can stagger the four bulbs on two separate timers, overlap them no more than 4 hours.

Truvu 100g Flourite, wet/dry, AHSupply 302w PC, PinPoint controller
10gallon15w T6+15w T8
55gallon40w T6 ODNO4x, no CO2. Discus grow out.
10gallon Tonina tank, 2x15w T6 ODNO 4x
I will do aquascapes after I collect all the plant species and grow them to perfection.
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