I have a buddy of mine who has a 32 x 32 x 63 tent. Vivosun 4 inch carbon filter. Vivosun in-line fan(blowing air in) 600w led light. Have had low humidity levels. Lowering into 30s level. He Wants to buy the BEST humidifier for that size tent that must increase levels. What’s a good one for a good price? I see different threads saying best this and that. Made choosing one pretty difficult. Or is he doing something wrong?