First off, sorry this isn't in the right subforum but hopefully someone can see it here sooner
I woke up tonight by an annoying whistling sound coming from my tank. I thought it would just be a blocked outlet in the spray bar, but no. All flow is gone.
I can't turn on the light to see what the problem is yet but all I can think of is a blockage somewhere. I have an inline heater which is making this more difficult than it has to be, so that could be blocked as well.
Has anyone experienced this before? Is it something other than a blockage?