Trying out Citric acid and Baking soda CO2 - Page 43 - The Planted Tank Forum
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post #631 of 872 (permalink) Old 09-13-2016, 11:23 PM
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Your just going to come out the neddle valve on your bottle and into the solenoid.
Is the solenoid still working? I have the same 1 and was thinking of putting on a paintball Co2 system.
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post #632 of 872 (permalink) Old 09-14-2016, 12:54 AM Thread Starter
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Is the solenoid still working? I have the same 1 and was thinking of putting on a paintball Co2 system.
I swapped that one out for the clippard. The one here I currently use on my air compressor's drain valve. It works well there.

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post #633 of 872 (permalink) Old 09-14-2016, 02:54 AM
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I swapped that one out for the clippard. The one here I currently use on my air compressor's drain valve. It works well there.

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Did you post a pic of it on this thread? Can you tell me aprox where it is if have. Such a long thread to go through and I have had a sinus headache all day.
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post #634 of 872 (permalink) Old 09-14-2016, 03:21 AM Thread Starter
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Here is a current shot.


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post #635 of 872 (permalink) Old 09-14-2016, 03:36 AM
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Thanks for the pic.

Last edited by Hilde; 09-20-2016 at 08:28 PM. Reason: deleted question.
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post #636 of 872 (permalink) Old 09-20-2016, 07:19 PM
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I am trying to understand how to choose the correct Pneumatic to fit on the hose. What did you choose.
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post #637 of 872 (permalink) Old 09-20-2016, 07:31 PM Thread Starter
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uxcell

Polyurethane PU Air Compressor Hose Tube 7 Meter 6mm x 4mm Royal Blue

From Amazon.



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post #638 of 872 (permalink) Old 09-20-2016, 07:41 PM
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uxcell

Polyurethane PU Air Compressor Hose Tube 7 Meter 6mm x 4mm Royal Blue

From Amazon.
Thanks! Actually looking for Pneumatic ľ NPT Barb 6mm. That helped a lot found it at a good price on Amazon. Now thinking that the polyurethane tubing will last longer than the vinyl tubing I was going to use. So I am going to get it too.

Last edited by Hilde; 09-20-2016 at 09:18 PM. Reason: changed contents
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post #639 of 872 (permalink) Old 09-20-2016, 08:28 PM
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What size NPT adapters did you use to connect the solenoid?
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post #640 of 872 (permalink) Old 09-20-2016, 08:34 PM Thread Starter
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uxcell 5 Pcs 1/8" PT Male Thread 6mm Push In Joint Pneumatic Connector Quick Fittings.
I used these also from Amazon directly into the manifold that came with the solenoid.



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post #641 of 872 (permalink) Old 09-20-2016, 08:42 PM
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uxcell 5 Pcs 1/8" PT Male Thread 6mm Push In Joint Pneumatic Connector Quick Fittings.
I used these also from Amazon directly into the manifold that came with the solenoid.



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Thanks!
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post #642 of 872 (permalink) Old 09-21-2016, 08:59 PM
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Jrill what diffuser are you using? What PSI do you keep the system at?
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post #643 of 872 (permalink) Old 09-21-2016, 10:18 PM
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Just as an update. I've got 2 Acid/Soda systems going. One for my 2.5G shrimp tank, and one for my 55G community planted. I'm using the OTHER system (the one that's just the off-white 2-liter caps with a pressure gauge, and tube running from one to the other), but the same formula. 200g Acid in 600ml water, and 200g Soda in 200ml water. I do not take any sort of special concern in getting it right. I actually just drew 2 lines on the bottles. 1 to indicate what 200g of soda looks like, and 1 to indicate where 200g of soda + 200ml of water ends up. Same for the soda bottle. So, just fill to the line with acid/soda, then top off to the 2nd line with water. I'm assuming this introduces a solid 5-10% margin of error in my formulas, but I didn't think it would matter much.

And, when running the 2.5G one at ~1BPS, for ~10 hours per day, for 8 days now, I've barely used any Acid at all. The gauge reads a tiny bit over 2psi, right now. Out of the green, but not enough to worry about, I think. But, it is seriously cool that I'm less than 10% from the top line. And, rough mathing it all out, maybe it will last for 2-3 months. Absolutely awesome, if you ask me.

On the 55G, pushing ~5BPS, for around ~9 hours a day, I'm having to refill once a week. The gauge has been around 1.5psi. Not great on refill time, but I just do it when doing water changes. No big deal. Until I can scrape up the money, I do believe this will cover my CO2 needs just fine. We've been pretty good at keeping the drop checker where we want it, as my wife is a stay at home mommy, and can pop in and check on both systems a few times a day.

I will say that without that luxury, it would be very hard to maintain a stable CO2 saturation, and pH level, using this equipment. It can fluctuate quite a bit during the say, we've found. Maybe a solenoid, so the horrible little valve wouldn't have to be messed with each time you turn it on and off, would help. Dunno.

Working for us, though.

-- 2.5 Gallon mini bowfront with a field of crypt wendtii, some java fern, java moss, 8 RCS, and several species of snails.
-- 55 Gallon long with Green Rotala, Crypt Wendtii, Red Ludwigia, Blyxa Japonica, Bacopa Carolinia, Banana Plant, Dwarf Sag, and an Amazon Sword. 2 Bolivian rams, 2 German Golden longfin rams, 2 German Blue Longfin Rams, 17 Rummies, 7 Neons, and a lonely Amano.
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post #644 of 872 (permalink) Old 09-21-2016, 11:38 PM Thread Starter
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Jrill what diffuser are you using? What PSI do you keep the system at?
No diffuser. I run the hose to the intake on my eheim. Pressure varies every week or so. I don't think the gauge is worth much so I don't look at the numbers. Let's just say it goes from low in the beginning to high after a couple of weeks and slowly back to low till gone.

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post #645 of 872 (permalink) Old 09-22-2016, 12:05 AM
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No diffuser. I run the hose to the intake on my eheim.
So you put the co2 output under the uptake of the filter?
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