How much sand? - Pool & Spa

There are so many custom floors in Brisbane but I will suggest top affordable custom floors services in Brisbane. Firstly I will suggest you Acfloor Sanding, Apex Floors Sanding and Polishing, Ampersand Floorsanding & Polishing, Budget Floor Sanding Brisbane.
Acfloor Sanding is a professional Timber Floor Sanding and polishing expert in Brisbane with decades of experience. Floor sanding requires great skill and attention to detail in order to achieve high-quality outcomes. Which decades of experience have given us the assurance we can deliver what we promise.

This is sort of a two-fold answer, as I am not exactly certain if you are referring to replacing the sand filter media itself or the sand.

Most manufacturers will tell you that the sand filter media itself is a permanent media filter. The only reason to throw the filter away would be after the sand calcifies into a solid block of concrete. The industry has spent 40 years telling the professional industry that sand is forever. Sand media is forever and you never have to change it.

However... this is what Hayward Pools is telling their customers:

On average, sand should be replaced every 3-5 years. The jagged edges of the sand wear down and become smooth as the sand ages. When this happens the sand can no longer trap debris particles and dirt can pass through the sand and back into the pool. As the sand ages, it may start to clump and the water flow can form channels in the sand, allowing the debris to pass through.

I have also talked with several others who believe what Hayward is saying, that basically every 3-5 years it should be changed. We have a strong belief in what Hayward says.

Hope that helps.

Mark
Bath & Spa Parts Online
http://www.bathandspaparts.com

Sand for sand filters must be NSF certified for use in pools... this is very fine grained sand and fairly uniform in consistency. Pressure sand filters are fully enclosed and require filling. Gravity sand filters require headspace and a vent to allow air in so the water will flow. Bear in mind, sand will settle in use so when you remove the old sand, it may appear it wasn't full in a pressure pump type system.

200 pounds of sand make sure you use pool filter sand make sure not to get sand in pipe

A little sand in backwash is not uncommon. Many packaged sand filter systems use pumps whose flow rates greatly exceed the flow capacity of the filter.(the more horsepower the better, right? - Wrong) If this occurs only during back flush the the pump is too strong or the sand level is above the beginning of the rounded top of tank. The sand level will eventually correct itself.

There is only one thing that can cause sand to come back into the pool from a sand filter. The internal assembly, called the lateral assembly, is either cracked or broken. This is an easy fix and should cost you around $70 to replace the whole thing. You need to unscrew the bottom drain cap on the filter to remove the water in the tank. Then, remove the multiport valve on top of the filter. Take a shop vac and remove the sand in the filter. If the sand hasn't been replaced in the last 3-5 years, this would be a great time to do that since you already have the sand out anyway. Then, remove the lateral assembly and inspect the entire thing. After you replace the lateral assembly, you'll need to fill the sand filter tank 1/2 full of water before adding fresh sand. This is done to cushion the laterals from the weight of the sand. Cover the hole in the top of the lateral assembly pipe with a cup or duct tape to prevent any sand from getting inside the pipe (the sand will come out into the pool if it gets into the pipe). Fill the tank 3/4 full of pool filter sand. Make sure it is genuine silica pool filter sand from a pool company. A lot of big box and home improvement stores sell play sand as filter sand. This will cause you more problems!

20%.
The 2M3 has 0.7M3 of sand
The 6M3 has 0.9M3 of sand
Therefore 8M3 has 1.6M3 of sand which is 20%.

First, the vacuum should easily pick up sand if the pump is working properly. The sand in pool may be coming through a cracked or broken lateral. If you changed the sand recently and did not prefill the tank with water, then this could be the reason. Plastic parts do fail eventually. Be sure that you perform the rinse cycle aftewr backwashing to settle the sand bed. Instructions on filter tank.

if u used play sand, or any other type of sand thats NOT pool filter sand, that could be the problem. also if there is too much sand or too little sand that could also cause this.

Here's a copy of the manual instructions...
Detail Sanding
Your tool is equipped with a teardrop base which allows you to use it on large flat surfaces
and tight spots or corners.
The pad tips may wear unevenly, depending on use. The pads are designed to allow you to
interchange and /or rotate the diamond tip.
Fitting Sanding Sheets ( Fig. 2)
• Detach the two diamond-shaped tips from the sanding sheet.

If this doesn't provide enough information, take a look at the pictures in the manual at the following link: http://www.dewaltservicenet.com/documents/English/Instruction%20Manual/589307-02,MS550GBMS550GH.pdf

If you still have difficulty getting the base off, write back and let me know specifically what the trouble is and I'll try to help you with it.
• Hold the tool with the sanding base facing upwards.
• Place the sanding sheet onto the sanding base.
The diamond-shaped tip can be reversed and replaced when worn.
• When the front part of the tip is worn, detach it from the sheet, reverse it and press it onto
the sanding base again.
• When the whole tip is worn, remove it from the sanding base and fit a new tip.
Tip of the Sanding Base ( Fig. 3)
When the sanding base tip is worn, it can be reversed or replaced.
• Remove the screw.
• Reverse or replace the worn part.
• Fit and tighten the screw.
Finger Attachment ( Fig. 4)
The finger attachment is used for fine detail sanding.
• Remove the screw.
• Remove the diamond-shaped tip holder from the sanding base.
• Fit the finger attachment onto the sanding base.
• Fit and tighten the screw.
Contour Holder Attachment (Fig. 5)
• The contour sanding pieces are for sanding curved surfaces and grooves.
• Remove the screw.
• Remove the diamond-shaped tip holder from the
sanding base.
• Fit the contour holder onto the sanding base.
• Fit and tighten the screw.
Fitting and Removing a Contour Piece (Fig. 6 & 7)
• Choose the contour sanding piece profile most suitable for your application.
• Place one end of the contour sanding piece into the recess at
the front end of the profile holder.
• Push the other end of the contour sanding piece until it clicks
into place.
• To remove the contour sanding piece, push it forward then pull the rear end out of
the profile holder (fig. 7).
Fitting a Sanding Sheet Onto a Contour Sanding Piece (Fig. 8)
• Align the sanding sheet with the contour sanding piece.
• Press the sanding sheet onto the contour sanding piece, making
sure that the sanding sheet follows the shape of the profile.