If you have to, then you can use buckets filled with water from the sink. You want to match the temp of the water from the sink to as close as you can from the tank. Water from the hose outside is just too cold and will shock your fish possibly to death so don't do that.
By the way, welcome to Aquaria Central. Enjoy your stay.
Marinemom
By the way, welcome to Aquaria Central. Enjoy your stay.
Marinemom