水草情迷

I would like to ask where should I place the 細化杯? Same side with the filter's water inlet, or opposite side with the filter's water inlet?
Let say my filter inlet pipe is on the left hand side, should I place the 細化杯 on the left or right hand side??

我放在出水口，D CO2泡泡被沖到全缸都是啊！
不錯呀！

GP 會不會沖走o的CO2泡泡呀.

就是要它沖到其他地方, 以延長和水的接觸時間, 才可更有效的溶入水裡.

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There is no fixed rule on this matter. The key is keeping the bubbles stay in the water as long as possible to give them time to dissolve into the water. Place the diffuser as close to the bottom of the tank makes the travelling distance of the bubbles to the surface of the water longer is the first step, place it near the water outlet can further distribute the bubbles around the tank can help more.
Hope this help.

If your water outlet direction is pointing upward, it will force the CO2 to escape from the tank faster.

If the outlet is horizontal (say about 1" beneath water surface) or a little bit downward, as GP said, it will blow the bubbles everywhere in the tank and maximize the time of CO2 in contact with water, as a result of more CO2 dissolve in the water.

多謝各位高手的意見,小弟會記住的!!

曾聽人講, 把杯放在入水位, co2 就有效地溶在桶內, 然後噴到tank 內, 是不是?

samshum: 真係可以o甘做.......其實同溶解器同一原理

咁樣可能會導致硝化菌死亡，因硝化菌係需要氧氣生存。

硝化菌死唔死就唔知,冒泡情況用溶解器一定好個細化杯。

Its good idea to have the CO2 injected into the filter, so the propeller can further mistify the bubble (but it make small noise once in a while) and CO2 stay in contact with water longer.

I think it won't hurt the nitrobacters since they depends on oxygen while CO2 saturation shouldn't affect O2 saturation. As long as the total CO2 is within safe level, they should be okay.

Yes. As long as you are not bumping the CO2 like crazy, it will not affect O2 within saturation limit. I remember this is related to GH and KH. (pls correct if I remember wrong)

Another interest information that, some people (forget the source) test with a empty tank with gravel attached with a canister filter, the result show that the filter only has 15% of the bio-bacteria of the total system. The remaining 85% are located everywhere in the tank such as gravel, glass, tubes....etc. That's why people can run the tank OK without any mechnical filter or just the power head.