Do all gravel are pre washed? - Aquaculture Fish

Gravel can't kill the motor. The motor is only connected via a drive belt. The only thing gravel can do is damage the pump as the gravel and water runs past the pump impeller!

If it doesn't turn in wash (low speed), but it does spin in spin mode (high speed), my guess is the the belt needs tightening or replacing.

Gravel sound from in the control panel, then it could be the timing drum if its an older machine.

It is most likely that the gravel you are using contains calcium and magnesium. This will ultimately cause the pH level in your tank to rise. You should use an inert gravel such as Swell Harlequin Gravel.

http://www.swelluk.com/aquarium/substrate-1695/gravel-1829/swell-harlequin-gravel-blue-376469.html

The best way to wash your gravel is by put a little portion of your gravel in a clean bucket and was it with a hosepipe. When it runs clear you should start the next load.

The reason for that is because many colored gravels are made from white dolomite which contains calcium and magnesium. In order to maintain the PH level you should get inert gravel.

You have a few different options for cleaning the gravel inyour aquarium:1. 1. Remove the gravel from the aquarium and washit thoroughly in a strainer, under warm tap water. Depending on the number of fish you have,this should generally be done once every other week. Do not wash the gravel with any chemical orsubstance as this could be damaging to the fish!2. 2. Use a store bought orhomemade gravel/substrate vacuum. Thisallows you to clean the gravel without having to remove it from the tank.3. 3. Use only a thin layer of gravel on the bottomof your tank and exchange with new gravel each time it needs to be replaced.

could be faulty hot water valve

To access the washer:

1. Use a putty knife about an inch wide.
2. Push the putty knife on the sides to release the top panel and lid clips.
3. Lift the top panel back towards the wall.
4. Tape the lid so it does not fall back and chip.
5. Remove the two 5/16 inch screws on the inside of the front panel. The top of the front panel will come towards you.
6. Lift the front panel off the clips on the bottom and set aside.
7. Pull the washer out from the wall and lift up the front to access the belt. Support it with a block of wood.
   

you have stripped a gear. I hope it is under warrenty if not you will need to get a technition to replace the transmission.