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Old 06-19-2019, 04:06 PM   #1
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Why is my ph always so high

I have a 29 gallon planted tank (very low tech, no co2, average light). The ph seems to be always at the max threshold on the API test kit kit chart Click image for larger version

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ID:	313160which seems to be 7.8 maybe even 8. this seems very adnormal for a freshwater system given I do nothing whatsoever that could buffer the tank. It matches my source water but doesnít the ph of tap water gradually acidify after being added to the established system anyway??

Other parameters in case they matter:
Ammonia- .25 ppm
Nitrite- 0ppm
Nitrate-25 ppm


I keep mostly South American fish such as catfish, tetras, an angel Iíll probably rehome soon anyway due to size, and dwarf cichlids. Everything in there now is fine, mostly because theyíve adapted to it. But getting new fish can be a struggle sometimes. I do monthly water changes and add seachem root tabs every 2 months, dose flourish comp. once a week, and iron and potassium every other day.
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Old 06-19-2019, 04:25 PM   #2
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That is a completely normal pH for tapwater.
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Old 06-19-2019, 06:28 PM   #3
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Well for one thing water changes should be done weekly since essentially fish are swimming in their toilet so 25-50% weekly is a good idea. The plants help some but.......
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Old 06-20-2019, 05:22 PM   #4
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Water Chemistry

Quote:
Originally Posted by Thomasflynnwa View Post
I have a 29 gallon planted tank (very low tech, no co2, average light). The ph seems to be always at the max threshold on the API test kit kit chart Attachment 313160which seems to be 7.8 maybe even 8. this seems very adnormal for a freshwater system given I do nothing whatsoever that could buffer the tank. It matches my source water but doesnít the ph of tap water gradually acidify after being added to the established system anyway??

Other parameters in case they matter:
Ammonia- .25 ppm
Nitrite- 0ppm
Nitrate-25 ppm


I keep mostly South American fish such as catfish, tetras, an angel Iíll probably rehome soon anyway due to size, and dwarf cichlids. Everything in there now is fine, mostly because theyíve adapted to it. But getting new fish can be a struggle sometimes. I do monthly water changes and add seachem root tabs every 2 months, dose flourish comp. once a week, and iron and potassium every other day.
Thomas...

The vast majority of aquarium fish will be fine in the vast majority of public water supplies. So, don't fret over your water chemistry. Just use a standard water treatment and change half the water in the tank every week. This will maintain a steady water chemistry, which is all the fish need to be healthy.

B
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Old 06-21-2019, 02:51 AM   #5
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My pH runs between 8.2 and 8.4. Fish adapt to pH.
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Old 06-21-2019, 09:36 AM   #6
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Water Chemistry

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Originally Posted by King Fisher View Post
My pH runs between 8.2 and 8.4. Fish adapt to pH.
Hello King...

As long as the water chemistry is constant, most fish you get at the local fish store don't care if the water is acidic or alkaline. Although, it's my understanding that they prefer water that's a bit higher in minerals, so a higher pH would be more to their liking. However, as long as you remove and replace most of the tank water weekly, this will guarantee a steady water chemistry and consistency is all the fish care about.

One thing though, if your plan is to raise and breed rare fish species, then you may need to take steps to try and maintain a specific water chemistry. But, most of us are content to keep more common types of aquarium fish.

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Old 06-24-2019, 12:38 AM   #7
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Originally Posted by BBradbury View Post
Hello King...

As long as the water chemistry is constant, most fish you get at the local fish store don't care if the water is acidic or alkaline. Although, it's my understanding that they prefer water that's a bit higher in minerals, so a higher pH would be more to their liking. However, as long as you remove and replace most of the tank water weekly, this will guarantee a steady water chemistry and consistency is all the fish care about.

One thing though, if your plan is to raise and breed rare fish species, then you may need to take steps to try and maintain a specific water chemistry. But, most of us are content to keep more common types of aquarium fish.

B
Breeding is a whole other story. I agree, more care should be taken in those situations.
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