Hi I have a 45 gallon tank setup for about 4-5 weeks now and recently I've noticed that I have some white debris floating at the bottom and top of my tank. I sift and vacuum the sand about every other day or as needed. And do a water change of about 20% every day. Inside my tank are: 1 log of spider wood 3 Amazon swords 1 micro sword(trying to root it into my driftwood) 2 corys 6neon Terra's 6 rummynose tetras 1 otocinclus Water parameters are good! 6.8 ph 83 degree water 0 nitrate 0 ammonia My filtration system is a aquatop cf300 So I'm doing about 5x gph I was told that I need a bigger filter is that true? Or would a circulation fan towards the bottom help?