Planted Tank Guru
Join Date: Jul 2010
Location: Huntington Beach, CA, USA
Is this a stable tank that has been running for a fair amount of time? This would give lots of good bacteria located all through the tank on walls, substrate, and decor. That would make it totally safe to do what you propose. Sounds like a very good, prudent plan. The only reason to doubt might be if it was a newish tank where the bacteria seems somewhat more "fragile". Even then it is a good plan but might need closer watching.