Caco
0
I would suggest if you have a decent layer of stuff on the bottom try to slowly vacuum it to waste
Or if you go for a water change try to hook up a hose to the inlet of a sump pump to suck the crud off the bottom
For a real cheapskate method you could even use a hose to siphon off the water and use that to try and clear the material up if you can get the outlet of the hose below the level of the pool floor
The reason being that the black layer is likely to be dead / decomposing organic matter like leaves etc and the chlorine would be very quickly used up trying to oxidise that material
If it is a fine layer and poofs up the only other option would be to try and brush is regularly to keep it in suspension so the sand filter catch's it
If time is of the essence then a significant water change, removing all the debris from the bottom may shorten your slam and clear it quicker. It may also be cheaper depending on the cost of water in your location. You may be able to get a credit on your wastewater charges from your local council if you ring and explain that the water is being disposed of to land, instead of through the reticulation system
Or if you go for a water change try to hook up a hose to the inlet of a sump pump to suck the crud off the bottom
For a real cheapskate method you could even use a hose to siphon off the water and use that to try and clear the material up if you can get the outlet of the hose below the level of the pool floor
The reason being that the black layer is likely to be dead / decomposing organic matter like leaves etc and the chlorine would be very quickly used up trying to oxidise that material
If it is a fine layer and poofs up the only other option would be to try and brush is regularly to keep it in suspension so the sand filter catch's it
If time is of the essence then a significant water change, removing all the debris from the bottom may shorten your slam and clear it quicker. It may also be cheaper depending on the cost of water in your location. You may be able to get a credit on your wastewater charges from your local council if you ring and explain that the water is being disposed of to land, instead of through the reticulation system