algae help.

i have a 180g with a 75g sump. lately i have been noticing brown algae growing on the glass and over the sand and some green bubble algae as well growing on the rocks. so i decided to buy some algae to try to fight back the growth but i don't think its working. i changed the lightbulb to 1650 lumens (day white) and i don't think that is woking ether.



parameters.



salinity: 1.024

ph.8.2

ammonia.0

nitrites.0

nitrates. <5

phosphates.<10

calcium. (api) 420

kh(api).7



water changes every 10 days.



temp 78



lights in the main display go on from 8:30 to 8:30 with a 3 hour sunrise and sunset. and as soon as they go off the light in the sumo comes on until the next morning.



feed once a day. (2ice when ever i can). brine shrimp, pellets and algae sheets.



i have 4 tangs, 1 angel, 1 leopard wrasse, 3 clownfish, 2 shrimps a couple of news an frags.



any thoughts?