My Water Quality

[Callum]

PH 7.8
ammonia: 0.1
nitrite: 0.1
nitrate: 20
phospate: 5.0
GH: 230
DH: 230? is this right if so does this mean my tank is super hard?
KH: over 100
is my water quality good or bad and is it hard or soft and is it suitable for keyholes? i know rams are out of the question

also are there any fish that thrive in these conditions not malawi or tangikya

 

[Fat Boy]

Ph of 7.8 is ok for Keyholes, and Nitrates of 20 isn't too bad. Your problem is Ammonia and NitrIte, these should ALWAYS be at 0. Is your tank cycled ? How long has it been running for and what inhabitants do you have ?

 

[Callum]

my tank has been running for a year it is fully cycled my stock is 5 harlequins 3 platys 1 bristlenose 2 cories i am moving to a 48 gallon soon which is why i have a low number of fish. also the readings were a bit of a guess on the ammonia and nitrite its more like 0.04 rather than 0.1 but this is because i recently changed some of my biological filter media. also is the dh right? i think that is 230ppm as otherwise its of the scale hard i presume it must be a dh of 13 yes? and will a phosspate sponge reduce my ridiculously high phosphate?