[easy clean]

I'm running a 21 inch mosmatic with a 15 lpm 250 bar machine and when using the fsc it can struggle sometimes to remove some weeds!??

But when I get the turbo nozzle out they come out with no worries at all, so I must have the pressure there?

Any help would be greatly appreciated

Thanks

Jon

[Simon@Pristine Pathways]

You have identified a problem and solved it yourself  in one post!
Simon

[Matt Gibson]

The Mosmatic is too big for your machine. Or the nozzles are the wrong size.

some drives i need to get the turbo out after the fsc as well. But not many 

[easy clean]

I did change the nozzles before as someone suggested they was wrong, what is the minimum requirements for a mosmatic then?

[Matt Gibson]

The bigger mossys and whirlaways are suited to higher flow machines. you would probably be better with an 18" .

Does the mossy struggle to clean block paving thats not very weedy? Or just the heavier weeds? Sometimes we all need to get the turbo out but if your mosmatic is struggling on not very weedy drives it might be time to downsize. ill have it off you for the right price 

[easy clean]

It does clean the drives well but won't shift some of the more stubborn weeds, even if you go back and forth on the same weed, it still doesn't shift them for some reason??

[evil genius]

More flow is needed.
My 15lpm on a 18" whirlaway struggles with some weeds. You ideally want 21+lpm to get the most outta that bad boy

[chris scott]

Flat surface cleaners were never designed to take weeds out...you need a gardener for that. They were made for er...cleaning flat surfaces which you find the do very well.
If you are trying to "clean out" weeds you will find the drive will look good "while the cheque clears" but will grow back twice as fast a you have merely pruned and watered ,this encourages  strong growth.

[easy clean]

Chris I treat all drives 7 days prior to cleaning with contact weed killer, then clean, then treat again with residual weed killer then sand, just thought the fsc should remove dead weeds but some it struggles with and wondered why

[Jettaway]

How do you find that residual mate?
I'm thinking of getting some but don't know if its worth the money.

[easy clean]

On my in laws drive no weeds a year later so must be good!

[chris scott]

Chris I treat all drives 7 days prior to cleaning with contact weed killer, then clean, then treat again with residual weed killer then sand, just thought the fsc should remove dead weeds but some it struggles with and wondered why

Sorry
I thought you were merely trying to blast the weeds out. The way you are doing it is correct ...only i would put the residual on after sanding as stops anything germinating in the new sand. Weed roots vary in size hence the problem...dandelions have roots as long as carrots! were as grass roots would be removed easily.