Help with CO2 Canister

[triqzfx]

So I found a kit for Co2 but I just need the bottle/canister. Can I use wielding canisters and such? Im hoping to get a good month out of it at least but I don't know what size I should go for? any help is appreciated I admit Co2 might be overkill but I want to give plants best chance they can and I will be using Ecotech XR30 pro's with diffusers I have leftover from my reef tankdays. my tank is 1000 litres (sumped) Plants I want to grow are:

Java moss Dwarf hairgrass Hemianthus micranthemoides Cryptocoryne hornwort ??? Echinodorus bleheri Vallisneria Spiralis Ceratopteris thalictroides duckweed Alternanthera reineckii 'pink' Alternanthera reineckii 'Mini rotala rotundifolia Rotala Macrandra

 

[triqzfx]

Apolgies for the weird formatting on the post I have no idea what happened.

 

[Nick potts]

Hi and welcome.

You can use welding canisters and SodaStream bottles with the right adapters, however 1000 litres is a lot of water and neither of those is going to last very long. Ideally, you want to be using a fire extinguisher.

Depending on where in devon you are I can point you towards a supplier

 

[Zeus.]

1000l is a big tank, which dependant on your pH drop may use a lot of CO2
CO2 database will help how much your tank may use

 

[ian_m]

I get about 100 days from 2Kg fire extinguisher in 180litres.

You have 6 times my tank volume that, so that's 100/6 -> 16 days.

Welding cylinders are 600gr odd, so a third my 2Kg, so down to 16/3 -> 5 days.

My CO2 injection has taken ages to get to that level cool of injection & flow, yours having a guess will initially be twice my consumption so 5/2 -> 2 1/2 days, that's 240gr CO2 per day.

So I estimate you will get only 2 1/2 days for £10 welding gas container, or more interestingly £1460 per year for in the end 85Kg of CO2. A bargain NOT.

May I suggest either a 5Kg fire extinguisher (£20 odd for old ones) or pub gas often £20 odd for 6.3Kg refill. A 6.3Kg will last you 6300/240 -> 26 days.

 

[triqzfx]

Based off zeus's and Ian's resposne it seems 6.3kg seems to be around what I need question is will it fit? now to the substrate part to get help with the other part of my problem !