Hello Byron and fish monger: |
These are very insightful statements. I didn’t know ‘a filter rated for the tank volume, and provided the entire biological system is in balance, there will always be sufficient water movement to deal with the chemistry, temperature, and gas exchange’.
What happens to water movement when the filter begins to clog or the biological system falls out of balance? I know you all don’t experience these types of problems due to being efficient managers but a sorry manager as me (assuming I am the only one) who’s entire biological system consistently falls out of balance with filtration capacity reduced needs to consider water circulation and making currents.
On the contrary, most of us likely do experience this, at least once. I recall a couple years ago sitting in front of my 115g 5-foot tank and it struck me that a few of the corys were respiring a bit fast, since they were just sitting still on a chunk of wood. I sat there trying to spot something for several minutes, until it finally dawned on me that the flow from the filter was not quite as strong as it normally was, and this I could detect from the sword plant's leaves right under the filter return. So, I disconnected the filter and cleaned it. It was dirty, indeed.
Within minutes of reconnecting, the corys were respiring normally. This taught me that the canister on this tank needs more frequent cleaning than the canisters on my two other large tanks. And during the past 2 years, this has been proven accurate.
Acquiring a filter sufficient for the tank is fairly easy; one considers the type of fish to be housed, and if live plants are intended or not. In my case with small foredst fish and well planted tanks, I can select any canister rated for the tank volume. After that, I just have to remember to clean it regularly. I'm now at every 3 months. My smaller tanks, from 10g up to 33g, all have basic sponge filters which are rinsed at every weekly water change so nothing ever changes in these tanks with respect to flow.
The next step is not to overstock, and to ensure that all fish added to the tank are suited to the conditions of flow.
‘The concern over water flow or current within the aquarium has to do with excesses either way and this must be geared to the fish’ certainly sounds correct especially for efficient managers. |
I guess I must muddle my way towards a current and circulation platform that works for my situation of unbalanced biological processes.
Water changes are another important factor in all this, and doing them or not doing them does impact things. I do not want to get into that, but I mention it because it really is a major factor in the biology.