Originally Posted by neshikins
Thanks for the messages, I shall try and answer the questions.
Current readings are 3ppm ammonia, 0 nitrites , 0 nitrates. So I'm just topping up the ammonia to keep it around 3ppm.
I live in south west uk the water is very very hard. I have an ion exchange water softener fitted in the house. I searched many many websites to find out if the softened water would be ok in the tank, and thus it is filled with the softened water, but obviously still has carbonate ions but the calcium and magnesium have been exchanged with sodium ions.
Ph is a liitle high at the moment about 9 , but this is probably due to the addition of ammonia? ( I'm a chemistry teacher)!
The dimensions are
It is a portrait tank. A biorb life .
Height: 25 inches (63cm)
Width: 16.5 inches (42cm))
Depth: 11 inches (28cm)
Weight (Full): 144 pounds (65kg)
Any help most gratefully received.
a ph of 9 is very high, most tropical fish thrive around a ph of 7.5 unless they are african species and then it can range in the 8.5 range such a some cichlids. Most south american species will prefer the ph at levels between 6.5 and 7.0. Generally the ph of the tank will drop over time without doing water changes, but you will need to keep the ph consistant in order for your fish to adjust to its levels. You might want to consider adding something to make the water more acidic such as adding some moss or bog wood of some type. The tannins leached into the water will lower ph levels.