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Old 04-08-2009, 07:25 PM   #1
AirSong
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PAR Data-Spiral Power Saver Bulbs, lighting question


Original title: Hemianthus Callitrichoides and Blysa in 2.5g, lighting question

I am trying to grow these in a 2.5g. My lighting is currently provided by a desk lamp that contains a 5w flourescent bulb that according to package gives off 25w of light.

If you want to see the details, it's THIS ONE.

Is that enough for them or should I get something stronger?

Last edited by sewingalot; 09-03-2009 at 09:37 PM.. Reason: Changed title to make into a sticky. :)
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Old 04-08-2009, 07:42 PM   #2
kid creole
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Your 5W bulb gives off 5W for the sake of tank light calculations.
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Old 04-08-2009, 07:54 PM   #3
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So stronger then ? how much light do I need?
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Old 04-08-2009, 08:04 PM   #4
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I'm growing HC and blyxa in a 2.5 with 8w of LED lighting. I'd definitely go with something higher powered, maybe two of those bulbs would work? But then you'd be adding another fixture..
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Old 04-08-2009, 08:24 PM   #5
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I could just get a 10-15w bulb if I need double power, right? why would I need a new fixture?
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Old 04-08-2009, 08:49 PM   #6
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You certainly could get a higher watt bulb, but some fixtures are only rated for a certain wattage so make sure before you change bulbs. I am currently growing Blyxa and HM in a 5.5 gallon with 27 watts of compact fluorescent and they are both thriving, if that helps you gauge how much light you may need... Good luck, I'm sure it will look great!
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Old 04-08-2009, 09:53 PM   #7
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Quote:
Originally Posted by prototyp3 View Post
I'm growing HC and blyxa in a 2.5 with 8w of LED lighting. I'd definitely go with something higher powered, maybe two of those bulbs would work? But then you'd be adding another fixture..
could you post more info on where to get them? experiences? thanks
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Old 04-09-2009, 12:18 AM   #8
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Just checked my lamp, I am allowed up to a 60w bulb, so 15 is more that doable, I will try to get a 13 though, that way my wattage will be similar to yours fishstoregirl
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Old 04-18-2009, 03:44 PM   #9
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also you dont want a 2700k bulb like the one you linked too, go with a 6500k they are readily available at the hardware stores
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Old 04-18-2009, 10:57 PM   #10
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Yes, thank you! :3 did get one of those, the blyxa is doing just fine with that light and excel, the HC, however, all died.

The person that sold it to me said I should at least install DIY Co2 system if I want the HC to take off. Anyone know if this will really fix the problem?
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Old 04-18-2009, 11:51 PM   #11
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HC loves co2 like alot of plants but what temp is the bulb you have?
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Old 04-19-2009, 01:16 AM   #12
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It's a 6500k, so it's fine, right? will adding more CO2 help then?
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Old 04-19-2009, 01:30 AM   #13
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Yes 6500 is fine.

Adding more CO2 will help any plantd tank. HC is especially picky and I would say it is almost a necessity.

You can also get a 27w 6500k CF desk lamp at Home Depot. Its around 20 dollars and I have only heard good things about that lamp. Remember that adding more light without increasing the available nutrients, ie ferts, for the plants will only give you an algae farm. Also without the right amount of CO2 or ecel you will also be limiting the plants and algae will be more than happy to make up te difference.
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Old 04-19-2009, 02:09 AM   #14
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The tank has been running for a few months now and I still have not had any algae problems.

The lamp I have can actually handle up to a 60w bulb (was bought at Home Depot BTW).

I rather like the low light, anything else would be too much for my small room. I do have dry ferts, but I'm still trying to figure out exactly how much to dose in such a small tank before actually adding any.
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Old 04-19-2009, 05:35 AM   #15
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Could you provide a picture of the tank?

What is the gh, kh, ph and co2 of the tank. There is always Co2 in the water.

How about just trying a different plant. Four leaf clover would probably work. I have it growing in my low tech 29 gallon tank. I had 65 watt of PC bulb and 20 watt T8 bulb. Now just went down to 2 - 20 T8 bulbs. No Co2, dosed with flourish comprehensive daily and sodium bicarb when doing water changes.
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