Hope i've posted this in the right place..
Hi to those that know me from BoF and to those who don't, I'm Kristie, I live in the UK and I have a tropical fish tank, currently containing:
2x large silver dollars
1x large black angel
1x common plec
1x albino rainbow shark
1x keyhole cichlid
1x zebra loach
2x shrimps (very small, transparant, and not sure what they're called..)
2x penguin tetras
Now, my angel keeps getting white spot. I've treated the tank 3 times in as many months, yesterday I see he's got it again

Ive used protozin and also specific white spot treatment. I am at my wit's end with the situation.
I'm thinking of doing a massive water change - would that be the right thing to do?
thanks for any advice you can give!
Kristie