What should i do first?

[chua]

Hi all

My 2l CO2 tank has a bubble counter rate of 4bps.(roughly)
This high bubble counter rate is required to reach CO2 level of 15-25ppm for my 3ft tank.

Do anyone know how long the tank will last?
(I am using a manual pressure gauge, valve open all the way throgh the night)

To make the tank last longer, what will be the better solution.
1) Change to a larger CO2 tank. (Nature don't take mine as it is a Taiwan brand)
2) Change to a solenoid.

Due to the cost, i am only able do one of the above first.
So is 1) or 2) a better solution to make my tank last longer?
Thks.

[vinz]

Larger CO2 tank = more CO2.

Solenoid = no wastage of CO2 at night when the plants don't need it.

I'd prefer getting a solenoid as there's a less likely chance of CO2 overdose, hence poisoning. However, I think a solenoid is a lot more expensive then a new larger CO2 tank.

Another thing to consider, do you have space for a larger CO2 cylinder. They must be placed standing upright when in use.

[chua]

Nature selling solenoid for only $90.
The price is around the same as a larger tank.
Think may consider buying the solenoid.

But how long will the tank last at this rate, Vinz?
Thks for the help.

[Goondoo]

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On 8/14/2003 1:54:57 PM

Nature selling solenoid for only $90.
The price is around the same as a larger tank.
Think may consider buying the solenoid.

But how long will the tank last at this rate, Vinz?
Thks for the help.
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It depends on your "lights on" timing. Basically, it should extend the amount of CO2 by atleast 2 times.

[chua]

I mean how long will my tank last for the previous rate of 4bps?

[PeterGwee]

How big is the sky? If you can tell me, I can probably tell you how long your tank will last. []

[vinz]

Peter, eh, make fun of ppl already, at least tell him roughly how long your cylinder lasts lah. .

Chua, Very hard to say unless you know precisely how much CO2 is in the cylinder and how much is expended everyday. As a vague gauge, my 5 litre CO2 cylinder running approximately 12 hours a day lasts my 6 foot (540 litres of water) aquarium about 3 to 4 months.

A 2 litre one lasts my 160 litre aquarium about 6 months