Perhaps the tank is exposed to direct sunlight, or the lights are left on too long. Or it may be a problem with too many nutrients in the water, which can come from a range of sources. Excess nutrients can be caused by everything from overfeeding to skipping tank maintenance to using a water source that is already high in phosphates. Unfortunately, even when you know what the problem is, getting rid of green water can be challenging. Before giving up and draining the tank entirely, try these tips to exile your green water.
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