allaboutfish
Aquarium Advice Addict
which is better.
suction cup
stick on
suction cup
stick on
But the stick ong thermometers dpn't evan touch the water. The real question would be how well glass conducts or insulates heat.
Don't buy a stick-on thermometer, no reason to when there are multiple options that actually touch the water.
But the stick ong thermometers dpn't evan touch the water. The real question would be how well glass conducts or insulates heat.