Your main problem is the PO4
. Removing that should be the first step. If using only RO
water now, you have eliminated the introduction of new sources of PO4
(except foods) and only need to remove the remaining levels. Get a good quality PO4
granular sponge and keep changing it out every few days until the level of PO4
becomes undetectable by the test kit.
Increasing the amount of LR
and removing any media from the wet/dry will also help. Depending on the flow rate from the retrurn pump, one PH
is most likely not sufficient flow. Low GPH
will allow nuisance algaes to thrive in less than desirable conditions. The skimmer will definately help improve things but it will not solve all your problems. Skimmers are not a must but IMO
they are a great benefit. Also keep in mind that any animals you have aquired to help remove the algaes will ignore them if they have grown out of control. The hair algae needs to be pruned short and any cyano
syphoned out manually.
As far as the fish are concerned, you should post more info about the size, age and general set up of the tank as well as other inhabitants. Newly aquired fish should always be placed in a >>quarantine tank
<< and observed for a 4 week period prior to placing in the display tank. You should also avoid adding more than one at a time unless a mated pair.