Frustrated .......help!

[elmo666]

After the initial joy of moving my discus into there new home I'm at the end of my tether trying to control fine particles suspended in the water.
Quick description of set up. 300ltr 1250mm long, two uplifts, one each end, go to eheim pro 3 with standard media set up, other to eheim 2224 filled with fine filter wool and Purigen supposed to "polish water". The latter is a new additional filter I didn't have on the old corner tank. I have a small eheim circulation pump low level for water movement, an eheim surface skimmer pointing across behind a large piece of bogwood that reaches the surface so deflecting its flow, and a tunze pump feeding my denitrate filter, but this only flows at roughly 10gph. Both returns from the externals return open just below the surface. The co2 largely goes into one of the uplifts to increase good contact time. From the visible evidence there's good movement throughout the tank but it's not excessive, the tank is loaded with plants with most stationary, some swaying slowly. The amount of suspended particles are doing my head in!! Initially had diatoms, so cut lighting back to 3hrs, slowly moved it up to 7 now. All brown algae disappeared, some very small amounts of green hair algae on a couple of annubias higher up on wood, all other plants thriving. Did have trouble with nutra soil at first, filthy stuff even tho they advise not rinsing. If I move substrate deliberately, yeah there's a brown "dust" coming up, but it only comes up an inch or so and quickly settles, none seems to go waterborne.
Sorry for essay but thought good description would help anyone who may be able to help.
Thanks for reading.

 

[nic1]

Have you tried micron filter sheets? You can fit them into your filter

 

[elmo666]

No, not heard of them to be honest. Thanks for the input tho, I'll look into them tomorrow, enjoy internet digging

 

[DrRob]

Is the filter wool filling up? Generally I'd expect to be changing filter wool fairly often in a cloudy tank, as it clogs badly. If it's not filling then you may need to look at the inlet for that filter.

 

[elmo666]

All I can tell you Rob is the uplift strainer is clear, and the flow rate from the return hasn't noticeable slowed. Since making the post I showed a video of the tank to a mate at the lfs, he's pretty sure its algae in suspension. Last week I tried Seachem clarity, and other than an initial foggy cloud it made no visible difference, tho did only dose once. I'm not a fan of adding chemicals, but he felt it was worth trying eSHa anti-algae treatment, so started that this afternoon. Prior to dosing I cleaned the polishing filter, to remove the purigen as per instructions, the very fine brown particulate content in the filter was quite considerable considering its only been on a week. Filter wool cleaned and more added due to extra space. So I'll keep you posted how things go over the next 7 days. Despite the misty particulate in the water, causing me annoyance, the discus colours are vibrant, shoaling peacefully, and as mentioned the plants are thriving, making me wonder a little now if extra ferts will be needed at all....not dosing since setting tank up 4 weeks ago. Oh, cut back co2 today to half duration that it was on, which was an hour before lights on and an hour before lights off, so now will only be on for 3 hrs mid light cycle.

 

[elmo666]

Update: Algae treatment appears to have been the correct answer, tank clarity massively improving, particles all but gone