perhaps a 20% water change would be in order. do you have the clowns in the same tank? they might get a tad too big in there old age. have you considered a bigger tank? hope you have luck with that cloudyness. i worked out what was causing my cloudiness and it wasnt the bacterial bloom as i had feared rather it was the cichlids moving all the sand about im filtering the water now for fine particals. well good luck