[AquaticLife] PH Variation in tank (tropical)
Leave your pH alone. There is no need to aim for a neutral pH level. pH does not mean that much in the overall scheme of things, ,but rapid pH changes can adversely affect your fish.
Did you establish a nitrogen cycle prior to adding all those fish to your tank? If not, then this is more likely to be the problem than your pH. Have you been testing for ammonia, nitrites, and nitrates? If not, you need to. Normally, it takes 6-8 weeks to establish a nitrogen cycle. There are ways to establish the cycle without fish (recommended), but many people still use fish to establish a cycle. With a fully stocked tank, such as yours (I looked up the tank online and it looks to hold 215 liters). Elevated values of any of the measurements mentioned above, can be harmful to your fish, as you are experiencing.
If you search the archives here, you will find much on this topic.
\Steve//
Category: Philippines Internet Koi Society
