Not really, other than your levels will be a little lower since you normally have a lower CYA. So with a CYA of about 20, your SLAM FC value will be at about 10. You'll still want to lower pH to the 7.2-7.4 range, even though you don't expect to have a really high FC (over 10), but it is still part of the SLAM protocol. Everything else on the SLAM page should still apply. Good luck!
I have virtually finished slamming but still have cloudy water which doesn't settle
I have vacuumed but there was very little to remove
There is a flocculant in the filter from the pump skimmer basket
The image is at a depth of 3.5 feet
I would recommend continuing the SLAM since you do need to pass all 3 SLAM criteria (link below) - clear water being one of the requirements. As for the Floc, those products have their place at times but can also cause more problems than what they're worth - especially in a filter. If you haven't deep cleaned your filter this season I would recommend you do so following the Deep Cleaning a Sand Filter page.
Once you pass the OCLT and CCs are no more thab 0.5ppm, then you might consider adding a little DE to help your sand as noted on the Pool School - Add DE to a Sand Filter page. But make sure to do the deep cleaning first.
Normally you add floc directly to the pool water, let it mix for an hour and then shut the pumps off. The next day there should be a flocc'd layer of sediment on the pool floor that you vacuum out to waste. You always vacuum floc to waste, never through the filter or else you will clog the filter or, if fine enough, the sediment you flocc'd will shoot past the filter and go right back into the pool.
You should never add flocc to the filter by putting it in the skimmer. Not only can you clog up your filter but you can also over-flocc your pool water which actually CAUSES more cloudiness by resuspension of fine particles.
Being as I don't need much I have been looking on Ebay and have come across food grade Diatomaceous Earth is this the same?
The flocculant is removed and a deep clean done on the filter. I have also started the OCLT. My indoor pool has a thermal blanket over it so it should be unaffected by the sun
No, it is not. Pool filter DE is heat treated to fracture the DE particles and make them sharp and catch stuff, this is also a big part of what makes them an inhalation risk.
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