水草情迷

My DIY CO2 only works for 2 days!!!!!Frustrating ar!!!!! I use a 1.25 coke bottle with 1200ml water, 0.3kg sugar, 4.5ml dry yeast and given slightly heated up envitonment.
Any one can tell me my problem..thanks

Some general points to note:

Too much yeast, use up sugar quickly/produce too much alcohol and yeast die of starvation or alcohol toxicity. Or pH gets too low and kill off yeast.

So adding too much sugar is wasteful, cuz alcohol concentration will get up to a level that kill off the yeast long b4 sugar totally used up. Adding small quantity of baking soda will prevent pH dropping too low and killing off the yeast.

Need some experimentation to get it right.

可以使用砂糖和酵母菌的混合液來添加CO2，如果是半包砂糖配約一匙的酵母菌裝在大寶特瓶中，壽命至少可達10天，天氣較冷時則達20天，但這是晝夜不間斷添加，必須要注意晚上要打氣來驅散CO2避免魚隻受害。
這種方法無法很精準的調節用量，本質上是過量添加，而且CO2品質不算精純，效果還是比不上剛瓶，但是它實在是太便宜了，一天成本不到1 元，所以小弟到現在還在用。

Thanks again, i try try to improve mine!

想請問下擴散杯其實點用ga?因為我用緊果隻叫BOYU有５個圈賣＄６５,我見到D bubble在個圈圈之前個隆仔到出左來,即係d bubbles冇行到入去果５個圈圈轉下轉下至出來,那麼我就將Ｄ水灌左入去個杯同Ｄ圈圈之間的空間內,諗住D bubble就唔會在個圈圈之前個隆仔度出而會行入圈圈度至出,但係……….e家連一個bubble都冇呀。點算呀?

你o既 co2 唔夠壓力啦, 谷唔起個 細化器, 試下唔用細化, 睇下有冇泡出啦, diy 都係用氣石最好同經濟

看看
http://www2.aqugrass.com/phpBB2/viewtopic.php?t=5381

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我的水族相簿

Use those 2L plastic Coke bottles. I used to have two hooked up to the same outlet (crazy ar ). It last for ~ 3-4 weeks....

My formula:

1. Using a funnel or rolled up paper, pour 3 cups of sugar into the bottle
2 .Add in 1/4 teaspoon of baker's yeast
3. Pour in a little warm water (warm NOT hot) and mix around to dissolve the sugar and yeast
3. Then fill 3/4 of the bottle with warm water
4. Shake well and it will be ready in a few hrs

Last....when CO2 is all gone....enjoy