Like the title states.....I need a cheap recommendation on a uv unit to help combat dinos. My tank nutrients bottomed out 2 months ago when my tank had to go fallow to eradicate ich. I would like something cheap because I'm not planning on running it full time. The problem is, this is a 300 gal tank. I'm doing water changes through a filter sock to vacuum the sand and im planning to add some phyto and bacteria soon. I just need something to help me in this battle when the dinos are water born. They are the ones that clear up at night and proliferate during the day on my sand bed.