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 fish / PH question, tell me what you know |
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| finsandfangs |
 Aug 16 2007, 06:13 PM
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S. Rhombeus
 Group: Members
Posts: 1,017
Joined: 17-May 05
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i am haveing issues with a account's tank. it is fresh water. some loaches, plecos, gourami, severnum. they have recently had some deaths. most of the plecos and 2 large loaches have died. i checked the water and the nitrite is 0, very low ammonia like under .25 or .025 what ever is the lowest on the scale (i relieze that .025 is lower than .25) but the PH is very high. so is the water that i do water changes there. the tank was almost 8.0 and the water from the tap ( well water) was just under that.
i was able to see one of the loaches before it died, it had one very clowded eye. the tank owners had said that before the loaches died they were at the top swimming/ floating erradicly (sp?) (swimmbladder problem?)
the only other info i have is that the gourimi are new from thier LFS. every thing else has been there for a long time
i thought off the bat that the ph must be too high, esspecially since the plecos died mostly, i had them buy ph down, they did one treatment and since then one loach has died.
This post has been edited by finsandfangs: Aug 16 2007, 06:16 PM
too over stocked to tell
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| DonH |
Aug 16 2007, 06:53 PM
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Hydrocynus goliath
 Group: Platinum Supporter Mod
Posts: 3,000
Joined: 13-June 02
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Ammonia toxicity is pH and temp dependent. The higher the pH and temp, the more toxic ammonia becomes. Since most ammonia test kits measure total ammonia, which is ionized (less toxic) + free (toxic). We need to look at an ammonia toxicity chart to see what level of free ammonia you have with a total ammonia of 0.25 ppm, pH = 8.0, and a temp of 80-82F (I'm guessing on the temp since you did not say what it was). Free ammonia, NH3, is toxic at around 0.020 ppm, and with the parameters you provided, it come pretty close at 0.015-0.016 ppm.
With fish that are more sensitive to water quality like clown loaches and plecos, it's likely that they died due to ammonia. The cloudy eyes and erratic swimming near the surface supports that.
Light travels faster than sound. This is why some people appear bright until you hear them speak.
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| drdsanders |
Nov 15 2007, 08:21 PM
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Newbie
Group: Members
Posts: 2
Joined: 5-September 07
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QUOTE(finsandfangs @ Aug 18 2007, 02:39 PM) 
thank you for your help
Have you concidered placing driftwood in the aquarium. Driftwood often softens the water, which may help to lower pH. Many plecos need wood to help with digestion. |
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WaterWolves - Exotic, Rare and Predatory Fish Since 1998! » General Discussion Forums » Aquarium Discussion » Water Chemistry 101
