水草情迷

I set this up right before this past Chinese New Year. 12" diameter bowl, ~15L water, ADA black soil, no filter, 100w regular household light on top.

The plants are ¬Ã¯] + ºÎ莲 + ­»Û£ + ¤û§À + Cryptocoryne wendtii 'Tropica'.

The algae covered ¥Û¥J & º¿·ê were from the previous setup.

The animals are: 1 baby snail + 2 ¤pºëÆF. I never fed the fishes - they just eat algae.





I change 1/3 water every 2 days. My problem is that about 10 hours after each water change, there will be a thick layer of bubble on the water. See below:



I notice that the bubbles are from the soil and the plants (which also means my plants are growing well?) There must be a layer of oil on top, such that the bubbles do not burst.

I understand that if the water quallity is not good, then there will be a layer of oil from fish food and waste.

HOWEVER, I have been using this bowl to keep a much larger number of fishes for over 15 months, and I have never see "oil" like this. I never had soil in the bowl before though.

So the presence of large number of plants caused the oil? Why?

The above pictures are white balanced. The following is NOT white balanced and closer to the real colour to human eyes.



I cannot use any filter mainly because there is no power outlet in the toilet.

谢谢¦U¤j¤j¡C¤p§Ì¤£¤~¡A¤£¤ÓÀ´¥´¤¤¤å¡C

草枯左會腐化分解，而泥亦有有機物釋出，油膜從此而來

沒有過濾 ? 沒有 CO2 ?
看來只靠換水, 是不能解決你個問題呀.

如果真的加不到濾水, 試下加條小黑摩利, 波子或者其他將魚魚類,
習性會吸走水面既野, 順手可清清油膜既.

_________________
多多交流, 多多研究, 多多搜尋
我的水族相簿

Draco, thank you for the quick respond.

I assume the plants are giving out O2, so the presence of oil on top of water should not cause problem to the animals, right?

Again, thank you in advance.

SuperCTW, no ¹LÂo, no CO2. Very simple setup.

I was thinking about adding a ¶Âªi¤l after reading other posts. I am a bit worry that a molly might creat a lots of waste. Anyway, I will try. Thanks for the suggestion.

由於沒有co2關係，植物光合作用有限，而油膜太多的話會斷絕水面同空氣的接觸而形成水中溶氧不足，這點要注意一下，但以現時生物數量相信問題不大，可以的話換水時盡量吸走

問得好有誠意呀!
我都唔知點解，不過我估係泥既事，新泥係比較冇咁穩定，草又要時間適應水質，生長會慢d。
你試下將d泥減半，相對上水又可以落多d，再觀察一段時間睇下有冇進展。

唔係[油漠],應係水質[酸軟化],但對魚無咩問題!!
起因~泥的比率過多;可以減泥or加些少鹽!!

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一切從心便是美...便是自己[email protected]

I added a ¶Âªi¤l this morning, and now almost all the bubbles are gone!!! ¦n"o³¥"!!!

I will take a picture tonight. Thank you brothers!!!

Ãñµ·, amen,

I also suspect the soil has a lot to do with the bubbles, because I saw lots of bubbles forming in the soil. Anyway taking away some soil is probably not practical for me now that the plants are growing with deep roots. I can see on the side the roots are about 2" deep. This will be a good lesson for me.

And I will add a bit salt in the next water change. Again, thank you for the suggestion.

咁樣放幾靚wo
睇埋最後原來係廁所黎

¦A无ªw.

矮珍珠追光了