Brown Spots lots of them!!!!!! - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 14 Old 01-12-2013, 11:48 AM
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Originally Posted by hobbyfishx2 View Post
The plants appear to be growing well. Despite the spots. I have several new smaller leaves coming up that weren't there when I bought the plants. The writing on the bulb says model 24rfh rated 120 vac, 60hz 17 W fluorescent bulb. Hope that helps. I'm honestly getting tried of the fish store. They seem to never really help, they suggested this and that. Which ends up costing me more money! I don't get the whole truth until I'm stuck with something more than I wanted to deal with! I guess tanks aren't low maintance after all!
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That sounds like a T8 which is fluorescent bulb. I would either measure the bulb from end to end and then go to the store and look for one in that length or take the bulb with you to the store and find one that length. As I don't think that bulb will work for plants.

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post #12 of 14 Old 01-12-2013, 12:05 PM Thread Starter
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That sounds like a T8 which is fluorescent bulb. I would either measure the bulb from end to end and then go to the store and look for one in that length or take the bulb with you to the store and find one that length. As I don't think that bulb will work for plants.
How do I know which bulb is a good grow bulb??
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post #13 of 14 Old 01-12-2013, 12:06 PM Thread Starter
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One other question: with plant food will it effect my fish in the tank??
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post #14 of 14 Old 01-12-2013, 12:07 PM
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I agree that light is probably one issue here. And lack of nutrients another. But there is also a third issue, and that is the GH of your source water, presumably tap water.

Prepared fertilizers for aquarium plants like the Seachem Flourish Comprehensive Supplement [and make sure you get this exact product, as Seachem make several different things under the "Flourish" name, you want the Comprehensive Supplement] contain all necessary nutrients, back those we call the "hard" minerals are not in sufficient supply because many of us have these in our tap water. So knowing your tap water GH (general hardness) is also important in case these may be lacking as they are in my tap water for instance. You can ascertain the GH from the water supply folks, they probably have a website.

Over a 20g, a single T8 tube will work but it has to be a good one. In this case, I would follow Boredomb's suggestion and go to the fish store and get something like a Life-Glo (made by Hagen) or the UltraSun (made by ZooMed). These are more intense light and will be fine. Make sure they are T8, not T5 which will not fit, and take your existing tube to make sure of the length as B said.

Lastly, welcome to Tropical Fish Keeping forum.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If youíre going to take it under your wing then youíre responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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