I have a pinhole leak in my pool filter. It is a SD80 tank. Can it be fixed or do i need a new tank?

try to tighten or lube intake union make sure seal is good then check top seal to pump basket if ok keep checking by turning off skimmers or main drain until ok if still does same you might need new seals in pump has it overheated or ran without water lately

there is a drain plug on bottom see if tight

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!

NO, THIS TANK IS UNDER PRESSURE, AND EVEN IF YOU CAOULD DO A FIBERGLAS REPAIR IT IS NOT RECOMMENDED.
THESE TANKS CAN EXPLODE WHEN LEAKS ARE PRESENT!

Put the cap back on and get a two part apoxy that seals leaks more affectionatley known as pool puddy. surround the edge of the lid to the tank. it drys really hard and will seal the leak. use water when combining the two parts . it has the consistancy of play doe but dries like rock. Take equal parts and roll it in your hands like making a hamburger. then roll it and strecth it like thich spegetti and surround the lid against the tank.

The Pool Tank

it depends, if it's leaking due to a crack on a structural part of the filter such as the tank itself, then yes, the entire tank will need replaced.

sounds like you either have a pinhole in your heat exchanger or possibly a bad tube washer (seal). A pinhole can result from poor water chemistry or chemical exposure such as pH chronically low or a chemical feeder (chlorinator or salt cell) installed near the heater without a chemical resistant check valve. You will have to dismantle the heater far enough to access the heat exchanger and inspect it while the pump is running. If it's a pinhole in the exchanger, you will need a new exchanger. If its a seal, you will just need a new set of seals (washers) for the exchanger manifold.

None that last very long. A new exchanger and keeping the chemicals in check moving forward is your best bet.

Of course you can try to have a radiator shop fix it but I have had mixed success with those and it seems to depend on how much of the remaining copper is thin and/or damaged but not leaking yet.

If you would like a quote on a new exchanger, contact us at www.arrowpools.net with you model number.

Ideally you will need to replace the wet end (not the whole pump) but there are products like LS-X made by fernox that will seal such a leak.