DIY CO2 Generator - Page 3 - Tropical Fish Keeping - Aquarium fish care and resources

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post #21 of 27 Old 07-10-2008, 03:49 AM
thanks for your help :D
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post #22 of 27 Old 07-10-2008, 06:37 AM
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Quote:
Originally Posted by okiemavis
Hello, I thought I'd revive this, as I followed these directions (with a few modifications), and I took photos along the way.

SAFETY WARNINGS
-Co2 will lower the pH of your water, especially in a tank with low kh (buffering capacity). Water parameters must be carefully monitored after adding co2
-DO NOT use a glass bottle. The gas can build up in the bottle, especially if there is a blockage in the tubing, causing an explosion. Plastic can expand and will be more tolerant of increased pressure. Also, if the bottle explodes, plastic will not become the dangerous shrapnel that glass will be.


I decided to test out a co2 diffuser which I ordered on ebay for $2 (not including shipping), many diffusers will not work with DIY systems because it's not pressurized, but this one is advertised to work:
How is that diffuser working? What kind of pH change did you see after adding the CO2 to the tank?

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post #23 of 27 Old 08-07-2008, 02:42 PM
Kim
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Could someone please explain to me how your fish don't get shocked during water changes when you are using CO2? It seems that if it lowers the pH of the tank water, then you do say a 25% water change with your tap water of a higher pH, then it would shock your fish. How much does the pH change? I have a canister filter on my 15 gal. so this would work great for me, but I don't want to play around with my pH too much or hurt my fish. Thanks.
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post #24 of 27 Old 08-07-2008, 02:58 PM Thread Starter
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Because it is "safely" changing the water parameters. It is not altering the hardness or PH in an unsafe manor. Maybe others can explain better?

90gal: 2x Tangerine Discus, 2x Clown Pleco, 2x Catfish.
75gal + 10gal sump: 2x Large Goldfish, 1x Common Pleco, 14x Leopard Danios
55gal: 5x Angelfish, 1x Common Pleco, 8x SIlver Tip Tetras, 16x Neon Tetras, 8x Albino Corys
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post #25 of 27 Old 01-17-2009, 10:23 PM
so as long as the KH is good and with good water buffers then the pH change shouldnt change much. If the KH is insufficient then C02 shouldnt even be used until KH and water hardness is better

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post #26 of 27 Old 01-31-2009, 07:11 PM
How often should you change the contents within the generator? When the bubbles finally stop appearing?

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post #27 of 27 Old 01-31-2009, 07:47 PM
did that diffuser work okeivamis?

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