Nimo
Aquarium Advice FINatic
I did water changes on my 60 gallon with only 3 fish in it twice a day got about 3 weeks to get thru cycle because ammonia shoot up to 4ppm then was followed by nitrites of the charts. My fish are still alive today because of multiple water changes and Prime water conditioner.
So yes 2 fish can still be very messy when in a cycling tank that spikes ammonia and nitrites not to mention the nitrates will be off the charts in 3 weeks with no water change which is also deadly to fish.
So you will still be looking at probly a complete tear down sanitation and starting all over again when you get back just leaving the mollies in there. You would be better off to leave the shrimp in there and re home the mollies if you are going to be gone that long
So yes 2 fish can still be very messy when in a cycling tank that spikes ammonia and nitrites not to mention the nitrates will be off the charts in 3 weeks with no water change which is also deadly to fish.
So you will still be looking at probly a complete tear down sanitation and starting all over again when you get back just leaving the mollies in there. You would be better off to leave the shrimp in there and re home the mollies if you are going to be gone that long