75 gallon tank need filter advice - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 13 Old 04-15-2009, 11:23 AM
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You didn't indicate if you intend to have live plants or not. In a planted tank, you want minimal water movement because too much will drive nutrients away from plant leaves and drive CO2 out of the water at the surface (if there is surface disturbance by the filter). You mentoned small community fish, which I take to mean tetras, barbs, danios etc. Most of these don't need strong currents, so another benefit of less water movement will be happier and therefore healthier fish.

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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post #12 of 13 Old 04-15-2009, 03:21 PM Thread Starter
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Quote:
Originally Posted by Byron View Post
You didn't indicate if you intend to have live plants or not. In a planted tank, you want minimal water movement because too much will drive nutrients away from plant leaves and drive CO2 out of the water at the surface (if there is surface disturbance by the filter). You mentoned small community fish, which I take to mean tetras, barbs, danios etc. Most of these don't need strong currents, so another benefit of less water movement will be happier and therefore healthier fish.
Sorry I left out so much info. I will not be doing a planted tank. Right now I have red platys, neon tetras, cherry barbs and a pleco...which will all eventually move to the new tank. Was at the LFS and was thinking of adding some Mollys, black neon tetras, and maybe some guppys. They had alot of other nice fish but I cannot remember what they were.

So is it best to run 2 filters or just 1 with these kind of fish? Or running 2 on low?
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post #13 of 13 Old 04-15-2009, 04:00 PM
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with the stock you are going with, most of them will remain on the smaller side, except for the pleco....that guy will get huge. You will be ok with one of the bigger filters, either a marineland 350 or a emperor 400. But, then again, you can never have too much filtration. But you will be fine with just one bigger filter, no need for two with that kind of stock
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