I have a 120 gallon tank with a stand that has a 12" ledge around the front and both sides. I currently have a small tank set up on the ledge of the stand. Below the tank I have a fuge and sump.
I have been doing daily water changes from the 120 into the small tank using a cup from the kitchen.
What I would like to happen is to have some sort of a system that does constant water changes on the small tank. This tank is temporary and I would like to not use pumps. I am thinking something along the lines of air line tubing and syphons. If you are able to think of anything please let me know.
What I have thought of is having air line tubing coming over the front of the 120 and goes into the small tank maybe a T or some sort of fitting that would allow water exchange to happen and then another tube going into the sump. I can't think of a proper way for the exchange to happen without draining/flooding the small tank.
If this isn't possible no big deal il just keep chugging along with the cup
Here is a picture to give you an idea of what we are working with.
I have been doing daily water changes from the 120 into the small tank using a cup from the kitchen.
What I would like to happen is to have some sort of a system that does constant water changes on the small tank. This tank is temporary and I would like to not use pumps. I am thinking something along the lines of air line tubing and syphons. If you are able to think of anything please let me know.
What I have thought of is having air line tubing coming over the front of the 120 and goes into the small tank maybe a T or some sort of fitting that would allow water exchange to happen and then another tube going into the sump. I can't think of a proper way for the exchange to happen without draining/flooding the small tank.
If this isn't possible no big deal il just keep chugging along with the cup

Here is a picture to give you an idea of what we are working with.



