dwc water has floating things in it

is this bad? my water in my dwc res has floating little pieces of stuff in it. i mean its not floating on the top its floating inside the water like suspended in the water. kinda looks like broken up tea leaves (small but each little clump is about 1/16th an inch to 1/8 inch long but is like a milimeter or so wide, so its long and skinny) floating/suspended in the water? there seem to be about 20 to 25 of these suspended in the water in 500 ml of water. the nutes are at 700 ec ppm, ph is 5.75 (the plants just sprouted and i read that they like more acidic when sprouting), temp in the room get around 85-89 for the highs (midday) and 73-78 lows (night).

if you need anymore info plz ask i will be glad to find out. oh i'm using the 3, 2, 1 scale right now they are in the veg state, and i did 4ml per part (12 ml of grow, 8 of micro, and 4 of bloom) per gallon. there is one drop of superthrive per gallon, 11ml per gallon of clearex and hydroguard. oh and there is a total of 12.5 gallons in the system currently.

please help as i don't know if i should do a quick clean out or what not?

filter the water and you will be fine

how can i prevent this from happening again. should i get a pump to keep it circulating in the res or what?. and is this normal? will these little floaters hurt the plants?