Depending on the species..yes. Clowns and other reef fish could deal with a powerhead in the QT. Lagoonal species (mandarin, seahorse, pipefish) may be bothered with heavy flow.
The sponge would act as a biological boost/filtration WHEN it is seasoned. A new sponge, void of the bacteria is sterile and would take time to season. If you set up a new tank, with new water, a new sponge, you'd get some cycling of the water.
If you set up a new tank, with new water, and an old sponge (already live with bacterium) you'd get a smallish if any cycle.
Weekly water changes in a QT is okay. However, if you are using meds (Formalin, Tetracycline, benzaldehyde green, etc.) you should follow the directions for water changes. Some meds require a specific time in the water to work. Others work immediately and you are then recommended to make a water change. Read the labels.
what I could do is take the power head out of my 29 gallon, it has a sponge. and put it in the 10 gallon and point the flow toward the surface of the water to cut down on the water movement. Then just by a new powerhead for the 29 gallon. So I would not need to run any type of mechanical filter? Or just the sponge and the water changes will handle it all. Thanks for all the input!
__________________ Tony K.
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75 Gallon Reef Tank
Livestock: 6 Chromis, Atlantic Blue Tang, Yellow Tang, Flame Angel, Pair Maroon Clowns, Bristal Star
Corals: Bubble Coral, Toadstool Leather, Star Polyp, Zoo's, Mushrooms, Clam
...My filtration is as follows:
AquaC Remora, and HOT refuguim in addition to the 30# LR and LS. All my measurements are crystal clean. zero's for nitrate and nitrite and amonia...
What do you mean by a HOTrefugium? Is this a single unit u purchased? Something you built?
Sorry if this is a question but I have never heard of such thing and am curious.