PPM levels

Hanuman

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4 Jan 2019
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459
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Thailand
Hello,

I have been wondering for some time if there is a level of ppm that shouldn't be reached or that is too high.

I have been seeing for the last couple of months levels of up to 280ppm in my main tank and I am wondering if that is ok. I dose EI so obviously that's the reason.

Thank you.
 

dw1305

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7 Apr 2008
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nr Bath
Hi all,
I have been wondering for some time if there is a level of ppm that shouldn't be reached or that is too high.
There isn't really a top level. You just need to find a <"range of values"> at which plant and fish health is acceptable.

If the ppm level keeps rising I'd just change a bit more water.

cheers Darrel
 

jaypeecee

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21 Jan 2015
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Location
Berkshire
Hi @Hanuman

At the risk of making a fool of myself, to what ppm level are you referring? Clearly, others have understood your question but I had to ask - if only as a sanity check!

JPC
 

Hanuman

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4 Jan 2019
Messages
459
Location
Thailand
Hi @Hanuman

At the risk of making a fool of myself, to what ppm level are you referring? Clearly, others have understood your question but I had to ask - if only as a sanity check!

JPC
PPM value in the tank. TDS could have been another (better) choice of word.
 
Last edited:

Hanuman

Member
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4 Jan 2019
Messages
459
Location
Thailand
Hi @Hanuman

OK, I'm with you now. It would be interesting to know your tank water KH and GH. Also, do you keep fish in this tank and, if so, what do you keep?

JPC
That depends on the test kit :lol:
Oase strips give me the following:
KH: between 6 & 10 / GH: between 4 & 7

Tetra KH test drops:
KH: between 4 & 5 - Haven't tested GH with drops as I don't have a test kit.

Yes I do keep fish. You can < see the list here >
 
Last edited:

Hanuman

Member
Joined
4 Jan 2019
Messages
459
Location
Thailand
After doing my weekly maintenance and WC I noticed the TDS in the tank was at ~280ppm. I was surprised as this is the TDS I usually get prior doing a WC. So I tested my tap water and found out it was at ~350ppm. I usually do a 80%tap - 20% RO.

Usually my tap water is ~230ppm so clearly it has increase by ~120ppm. Should I do an additional water change with RO to bring the TDS to its usual level after a WC or just let it be?
 
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