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Help me understand dGH
#1
If a fish can live in water upto 12 dGH

Is that a soft or hard water ?
Bikini Bottom - 168l - community
The Kremlin - 58l - planted WIP
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#2
My GH has gone down from 14 to 8 ??
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#3
Upto 12dgh would be a soft water fish, 9/10dgh and above would be hard water.
8dgh seems to be a good balance for some of the softer hard water fish and most soft water fish.
 😇 Heaven doesn’t want me...
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#4
(08-01-2019, 07:12 PM)Gingerlove05 Wrote: Upto 12dgh would be a soft water fish, 9/10dgh and above would be hard water.
8dgh seems to be a good balance for some of the softer hard water fish and most soft water fish.

So does that mean my choice of fish has changed, I thought my original hardness wouldn’t change , sorry I’m a bit confused  Huh
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#5
It does seem unusual for it to drop. Especially that much :/
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#6
It’s been at 8 for the last 6 tests

I guess once it’s cycled we will see where we are
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#7
What tests are you using for dgh?
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#8
(09-01-2019, 08:58 AM)PJN Wrote: What tests are you using for dgh?

Husband does all the testing with a test kit from Germany ‘JBL’ Test Kit for freshwater aquariums, think for dGH is a drop method.

We are going to re-test tap water this a.m. to see if the first test was off and the tank is due a test today too.
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#9
Today’s test for dGH

Tap 14
Tank 7

Obviously same method of testing used

Plants, Driftwood, Causing difference ?
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#10
dGH should not change like that in an aquarium. I've never heard of any mechanism for it to change like that other than using a reverse osmosis kit on the tap water.
If anything it can increase over time if you have evaporation (only pure water evaporates leaving the minerals behind) and top up with tap water.
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