Post a picture of the fish so we can confirm white spot.
Have you added anything to the tank in the 2 weeks before this started?
You don't need to remove plants when treating fish.
You can treat white spot with heat (30C for 2 weeks) or use chemical based medications that contain copper or malachite green. Copper kills invertebrates like shrimp and snails. Malachite green is a carcinogen (causes cancer).
For heat treatment you just raise the water temperature to 30C (86F) and keep it there for 2 weeks or at least 1 week after all the dots have gone. You don't need chemicals when raising the water temp to 30C, the heat kills the parasites. The fish you have will be fine with the warm water (30C).
If you want to use chemicals, have the temperature around 24-26C and add the medication. Remove carbon from filter before adding chemical medications.
Increase aeration/ surface turbulence when treating fish with heat or medications.
*NB* Do not use heat (30C) and chemicals because you will kill the fish.
Before you treat the fish or raise the temperature, do a 80-90% water change and gravel clean the substrate. This dilutes the number of parasites in the water and buys you a bit of time to get the treatment started. You should also clean the filter before starting treatment.
There's more information about white spot at the following link. Post #1 and #16 are worth a read.
This is a common question that is often asked, what is ich and how is it recognisable and what causes it? The real term is ICHTHYOPHTHIRIASIS. OR commonly known as white spot. It is an extremely comon parasite that affects aquarium fish. It is highly infectious and potentially lethal and...
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To work out the volume of water in the tank:
measure length x width x height in cm.
divide by 1000.
= volume in litres.
When you measure the height, measure from the top of the substrate to the top of the water level.
If you have big rocks or driftwood in the tank, remove these before measuring the height of the water level so you get a more accurate water volume.
You can use a permanent marker to draw a line on the tank at the water level and put down how many litres are in the tank at that level.
There is a calculator/ converter in the "FishForum.net Calculator" under "Useful Links" at the top right of this page that will let you convert litres to gallons if you need it.