Hi, first post, and it seems like such a trivial question but I really don't want to kill my fish.
I've had my tank for about 6 weeks, it finished cycling last week but I left it an extra week to be sure. I'm about to do my first
water change. I filled a bucket with water this morning, it's been sat in the sunshine trying to warm up, then in the house to try to get to room temperature but it's still COLD!
I've got 2 zebra danios and I really don't want to kill them by freezing them to death. Will a drop of a few degrees hurt them or am I going to have to unwire my heater to get this bucket warmed up.
The tank temperature is 25degrees at the mo and the water I want to add is just over 17degrees. It's 10gallon tank (ish) too. I'm in the UK, we don't do gallons.