When you run it … keep it from walls - it needs to have vents unblocked … dump water regularly to stop any mold or mildew . Keep unit clean vents and all. They work pretty hard pulling in damp and exhausting air.
Reason i wanted to see your grow area was to see if ambient areas are showing moisture/ mildew or similar high humidity. I have seen grows with wooden tiers blackened with mildew , or unprepared walls ( basement , etc ) just displaying moisture problems.
Even simple risers to your plants can help circulate air around plants and keeps containers from cold moist flooring.