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From my past experience, I used to only top up water without any water change. After a few months doing so, my GH shot up. You may need to measure your GH after a while. Otherwise I would advise you to do water change in small volume regularly.
i am currently using a fan to cool the water temperature, so i ended up topping up water everyday, does this cause GH to raise?
From my past experience, I used to only top up water without any water change. After a few months doing so, my GH shot up. You may need to measure your GH after a while. Otherwise I would advise you to do water change in small volume regularly.
TDS of Singapore tap water is roughly 60-100 (depending on where you stay). I'm not sure of the TDS reading in Malaysia.
Tap water would contain some levels of calcium & magnesium which are key components of GH. These salts remains in the tank when water evaporates.
Hence, if you top up tap water daily due to evaporation, in theory, it would increase GH by very small amounts.
You can avoid this by topping up with distrilled or RO/DI water daily.
Else, as Hann mentioned, take the 'extra minerals' out with small water change.
Hann and Suzerolt, thanks for explaining. My shrimp tank tds is 140. my place tap water tds is 50-70.
However, i started to use RO water to top up these day. I still noted my GH increases from 5 to 7. i wonder is because of my top up.
It would depends on your scape of your tank also. If your tanks have rocks, it might cause GH to rise also.
i've read somewhere if u add peat or some form of material that produces humic, it lowers/buffer your gh to lower levels by some kind of chemical reaction thru ion exchange with calcium and magnesium.
Kind of scientific, so if you want to know more can google it.
of cause the proven method is distilled water change.
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