ran out of CO2 - should I dose Excel? - The Planted Tank Forum
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post #1 of 8 (permalink) Old 03-30-2018, 12:15 AM Thread Starter
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ran out of CO2 - should I dose Excel?

Just noticed that my CO2 tank is running at 0psi, and I'm getting only 2-3 bps with the needle valve wide open.

It's a 10lb tank that will need to be hydrotested. The CO2 place I use will be closed until Monday. They will likely give me a loaner while mine is out getting restested. Should I dose Excel for the next 72 hrs?

75 gallon,
low plant mass (just growing out right now)
hygro polysperma (not doing well - all old leaves have fallen off) some sort of Ludwiga, 5 jungle vals
some BGA.
EI daily dosed on Jebao DP4.

I'll turn down the lights and photo period. Currently running 1 t5ho for 8hrs, a 2nd one for 5 hrs. I think I might just go with 1 t5ho for 5 hours over the weekend.

Half dose of Excel? Full dose?

Thanks,
Peter
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post #2 of 8 (permalink) Old 03-30-2018, 01:24 AM
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Quote:
Originally Posted by Petee_c View Post
Just noticed that my CO2 tank is running at 0psi, and I'm getting only 2-3 bps with the needle valve wide open.

It's a 10lb tank that will need to be hydrotested. The CO2 place I use will be closed until Monday. They will likely give me a loaner while mine is out getting restested. Should I dose Excel for the next 72 hrs?

75 gallon,
low plant mass (just growing out right now)
hygro polysperma (not doing well - all old leaves have fallen off) some sort of Ludwiga, 5 jungle vals
some BGA.
EI daily dosed on Jebao DP4.

I'll turn down the lights and photo period. Currently running 1 t5ho for 8hrs, a 2nd one for 5 hrs. I think I might just go with 1 t5ho for 5 hours over the weekend.

Half dose of Excel? Full dose?

Thanks,
Peter
I've heard of people getting melt back from jungle val when they use excel so I would be careful there. I'm sure the plants will be fine without co2 for a few days just cut back on the lighting a little. I've had my tanks run for a few days without co2 without much of a noticeable difference.

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post #3 of 8 (permalink) Old 03-30-2018, 04:50 PM Thread Starter
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Temporary co2 setup.

I have a 20lb siphon tank that I use to fill up empty sodastream canisters at home.

I had to invert it to draw co2 gas instead of liquid. Couldn't fit it in the port on the front of my stand.

I just need to bungee it somehow as a safety from tipping.

Not sure what the wife will think.





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post #4 of 8 (permalink) Old 03-30-2018, 05:07 PM
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excel and co2 are different

excel cannot replace co2

excel helps the plants absorb co2. but does not add co2.
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post #5 of 8 (permalink) Old 03-30-2018, 05:07 PM
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Not sure what the wife will think.





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post #6 of 8 (permalink) Old 04-03-2018, 02:04 PM Thread Starter
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Well I now own a 2nd new 10lb Co2 tank. It was going to take about 2 weeks to get my tank hydrotested and filled, so I bought a new 10lb tank to use as a spare.

In hindsight, I should have bought a 20lb refurbished tank. It was cheaper, and I could have set it in the space between the tv and aquarium stand.



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post #7 of 8 (permalink) Old 04-03-2018, 02:10 PM
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Depending on the ludwigia, i keep all those plants with ease without Co2. Trim off the dead part of the hygro. As long as you have good substrate, medium lighting, i dont see why you would need Co2 in a 75 with 7 plants.

Sometimes you just need a little more cake.
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post #8 of 8 (permalink) Old 04-03-2018, 02:55 PM
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Quote:
Originally Posted by The Bungulo View Post
Depending on the ludwigia, i keep all those plants with ease without Co2. Trim off the dead part of the hygro. As long as you have good substrate, medium lighting, i dont see why you would need Co2 in a 75 with 7 plants.
I am guessing for the same reason you want co2 in your 30g.
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