11-16-2011, 11:43 PM
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Originally Posted by AbbeysDad
I use a water bottle baffle on my AC70's so there is very little surface agitation and it cost nothing to make
Its still more then the very very slight to pretty much no surface movement I have in my tanks. In a well planted tank water movement within the water column is often just as important as filtration. I'm not sure how this tank is going to be setup, but if you get really dense plant growth a HOB is not going to move the water around the tank as well as a submersible pump. The submersible pump can direct strong current across the length of a tank at a depth, giving it better circulation abilities. Its quite important when large amounts of plants like to constrict water movement which can lead to cold zones in the tank. These places will also become nutrient poor pretty fast.
Given the stocking is just 4 DP and some cherry shrimp the tank is not actually going to have a 'cycle' anyway. Even with the filter in there the plants are going to consume the ammonia. Given the large amount of plants and low bioload you don't even need a filter. You do still need a powerhead to provide circulation. If you have a filter the biological abilities are irrelevant all the filter is going to be doing is mechanical filtration.