light time...

Have you checked water parameters? Is there a shot that waste buildup is causing the algae? Otherwise, what about getting a snail or two? I've had golden mystery snails and they clean up a tank nicely and they're a lof of fun to watch. For your plants.... i'm thinking they're fake? So why not try ones with bigger leaves so it makes scrubbing the algae off easier?

Are your aquarium plants live or plastic?

If they're live, you need around 10 hours of light per day, although some plants can live with 8 hours. Algae can be a problem with some of the slow-growing plants, not so much with fast-growers. Frequent water changes (at least 25% every week) can help keep nutrients out of the water, and don't over-feed your fish. High lighting over the aquarium (over 3 watts per gallon) can make algae worse, and really low lighting (.5 watts per gallon) can create brown algae.

However, if the plants are plastic, light over the aquarium is not really even necessary. Ambient room light is fine if there's adequate daylight in the room, and lights on to see the fish whenever you want it.

try adding a carbon supplement to the tank. carbon is a part of the photosynthetic process, and with it plants are better able to use up nutrients in the tank and outcompete the algae. the plants will grow and the algae will die, but it may take some time to come to a balance.