Why is my GH and KH levels so high?

Question

Ok have just done water test with the following results:

Ammonia 0
Nitrite 0
Nitrate 5
PH 7.2
GH 120
KH 130

Im guessing my tap water is really hard and am going to test that as well to see if they match closely to my tank water.

Do i need to worry about the GH and KH being so high and how do i reduce these levels?

I also did a 25% water change yesterday.

Are there ways i can reduce these levels?

Have read about RO systems and the use of peat moss in the filter, but dont really want to buy an exspensive RO system.

Anonymous · Accepted Answer

You have great levels and there is nothing for you to worry about.  My water has much higher levels then yours on all accounts and it hasn't kept me from keeping anything I want to except the most delicate aquatic plants.

Seriously, worrying about it is a total waste of time and effort.  Focus on keeping the tank clean and fresh and healthy, because that's the important part.

Cheers

Anonymous · Answer

Only if you're trying to breed discus, or angels, or have some other fish that require a low pH, although 7.2 is fine for most fish of that type. Using RO water is great for fish, but often you have to add alkalinity because without the hardness, the water can shift to a very low pH. Generally speaking, for most fish, the harder water helps to fight off the tendency of a tank to drift toward a low and dangerous pH level.

Jason P · Answer

I wish I had water like that!

Your levels are perfect for keeping most fish. Like someone else said, unless you're trying to breed some specific fish, I wouldn't change a thing.

It looks perfect to me.

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Why is my GH and KH levels so high?

3 Answers