Dusty water and critters in new tank

I got a serious problem with dusty water (not green) and theres also some very small critters ½-1mm long, white. Some with 2 "balls", some without.

Tank: 250L
filter: Eheim 2224
light: 4 x 39WT5 ( 2 lamps on 10 hours - 4 on 6 hours)
Substrate: Tropica Aquacare substrate topped with floodgravel 1-3mm
CO2 (none) but i use Easycarbo 10mL daily (Pressurized will be up next week)
Ferts: EI and 50% waterchange

The tank is ~ 1 month old with good plant growth.

What are the critters, and what causes the dusty water - its been getting worse within the last 2 weeks.

 

Plant issues too

Now im also seing small worms ~ ½mm wide 3-5mm long.

My Microsorum pteropus ''Narrow'' is getting holes and black spots, and yellowish - also on the fresh young leafs, that in my other tank were nice and freshly green. Could it be snails or other critters? Amanos?

Some shots of the Rotala sp. green are yellow and many leafs has small black spots.

Any ideas?

Pic of my Microsorum pteropus ''Narrow'':


Pic of my Rotala sp. green and Anubias b. var nana


Im not holding back on any nutrients, but im suspicious to possible lack of nitrate and iron - ???

Should i try upping the makro and micro?