Tropical Fish Forum
Tropical Fish Keeping Help and Advice => New Fishkeepers => Topic started by: matnose17 on December 12, 2017, 02:00:54 PM
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Hi all,
I'm new to fish keeping. But I'm building a system that will turn of the co2 supply during the night.
I was thinking to use a timer and a solenoid valve. But I'm not sure which solenoid valve I have to use. There are so many different kinds of solenoid valves. I think I have to use a plastic one, so there will be no corrosion. Do you think this valve will do the job?
https://tameson.co.uk/solenoid-valve/2-way/plastic/other/3105nc-12v-solenoid-valve-2way-014inch-nylon-0p2-10bar-nbr.html
I'm afraid it will leak some co2 because it's not closing well enough.
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I dont have a co2 system myself but I do know that co2supermarket.co.uk have some good guides for what you need, even if you dont end up purchasing anything from then their kits should show you wants required.
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@matnose17 It doesn't look ideal and unless you have one already I would recommend an eBay search for something like a '4mm quick connect CO2 solenoid valve' and you will find several around the £5-10 mark. You will find adapting this one down to the correct pipe size will be a pain and probably end up costing more. I am not aware of the need for a plastic valve particularly not the body itself, the seats will almost certainly be a rubber and unless you have a wet gas I can't see corrosion being a problem. If you are using a pressurised CO2 system there will be valves with the inlet suited to fit on a bottle regulator and then a 4mm tube outlet. If it is a simple DIY yeast system then DONT fit a valve, it will creep up on you and explode one dark night when you least expect it, probably just after you decorated :)
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I picked up a complete JBL proflora kit with 3 cylinders, 2 regulators and a solenoid on Gumtree for £30, all I needed to buy was a diffuser. The solenoid works a treat with a timer, but pricey to buy new...