Not really. One method of curing this is using plastic sheet covers. This is an easy solution if you are having an algae problem. The coco coir rolls also work great in tray. The coir mats are reusable if you clean them. If you are worried about the algae right now, know that it does not usually create a huge problem. But if you do want to clean it, use a Tablespoon of 35% hydrogen peroxide in a gallon of water. Fill a spray bottle and spray the tray (it’s fine if the plants are in it).