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Old 04-04-2006, 01:13 AM   #11
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I know, but what do i do with that water, i test it for my "normal" pH? then how to i compare it to tanks readings and what do I put in the calculator? Am I missing somthing, was this explained on the website?

Update: My kuli loaches decided they like the inside of the reactor and tore up the filter floss to get inside. This freaked me since the CO2 content in there will be very high, so I redesigned it to have on end completly open but the entier thing tilted and angled into the ground, creating a buble in the back and an opeing where they can freely go in and out as they please.
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Old 04-04-2006, 03:54 AM   #12
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Ah, sorry. Should test KH and pH of tap to get a baseline value for CO2 from tap. (KH results should be the same, but good to get a tap value to verify nothing in the tank is messing with it.) You would then enter those values into Chuck's calc and see if you get the expected ~3ppm CO2. If you have much less (say, .5ppm CO2), you can probably assume the derived CO2 level in the tank is off, and then infer CO2 levels by pH drop (compared to tap) and plant health/algae.

If the current CO2 levels seem acurate, interested in what you try next.

Your updated reactor sounds like a good idea. FWIW, non-metallic window screen is great at keeping kuhliis where you don't want them.

HTH
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Old 04-04-2006, 06:14 PM   #13
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OK Somthing is off. I did the tests and here is what i got:

Tap:
pH 7.9
KH 11

Tank
pH 7.5
KH 5

I did both tests twice... did I not leave the water out long enough? Is this expected? Do I need a new test kti? I'm using "Freshwater Master Liquid Test Kit" has a carton fish on it named Doc Wellfish.
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Old 04-05-2006, 09:25 PM   #14
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Your Kh should not change by letting water sit out. Ph should rise only if there is in fact CO2 to outgas.

You might try taking a glass of tank water and letting it sit for 24 hours before you test it. Then test it and some fresh tank water at the same time. If the Kh is not the same on both, then the test is in error. Now for Ph, that may or may not change based on actual CO2 content and outgassing. But, the Ph of the aged water should be equal or higher than the fresh tank water.

These basics are helpful to know only for the sake of determining whether you are getting "reasonably accurate" readings in general. The major problem with most home test kits is that minor variations in the test conditions, often introduced by the person doing the test, result in major changes in the results. You might try performing the same test (Ph or Kh) 5 times in a row from the same water sample. The variation you get in those 5 measurements will give you some idea as to the "accuracy" with which you are able to test the water.
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Old 04-05-2006, 11:12 PM   #15
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If the test results hold up after Zezmo's multiple trial advice, maybe try posting in Planted or General. I recall discussions about KH dropping in the tank, but have only experienced it when using an acidic substrate designed to lower KH. Am no help.
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Old 04-06-2006, 07:34 AM   #16
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I posted the parts needed to do DIY presurized CO2 in the CO2 sticky in the FW planted area of the fourm. Just in case someone didn't see it.
any standard CO2 tank would work 5lb on up (they could make slightly smaller sizes but I would think a 5lb tank should be cheap enough localy)
I gave the links to the needle valve and 1/8" adaptors needed to meter the gas properly.
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Old 04-06-2006, 09:51 AM   #17
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I saw that, however thsoe valves will not stand up to the full pressure of the tank, so a regulator is still nessary.

I did however contact the owner of the site and he directed me to a site with the full instructions on setting up a CO2 system with paintball equip.

http://www.plantedtank.net/forums/di...regulator.html

It says total price is $180ish so its just as expensive to use a real setup. I'm going to stop trying to upgrade this and just save my $ for a pressurized system. However until then I will still use this.
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Old 04-06-2006, 10:55 AM   #18
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You have to use both.. the needle valve is after the regulator..
thats how you conroll the flow..
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Old 04-06-2006, 10:41 PM   #19
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Ok so I retested my water and here is what i got:

Tap:
pH Did not test
KH 16

Tank
pH 7.4 (Deffinatly got alot lighter, changed)
KH 6

I just put a new filter on the tank, wondering if somthing in there raised the KH, could also be that i did a water change.

the KH in the tap water went up signifigantly, so I'm thinking it may be somthing in the cup i held it in. I got another bit of it and will test again.

UPDATE: 4/7
Well I tested the pH again today and my system is deff working.

I got a new canister (Wo0t less CO2 loss) and hooked my extra syphon up to this filter outflow. I tested the pH today and it was at 7.1, it droped like a rock.My fish were also gulping and hanging on the surface.

Please see my other thread in general discussion...
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Old 04-11-2006, 09:32 PM   #20
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For anyone I have the pH at 7.0, exactly where I want it... suposedly.
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