yesterday, i added more water to my tank to fill'r up to the bream. i also added that small box with the teeth shape strainer where the overflow box, before this i had just the U tubes going straight to the tank.
before and after, i have a lot of the splashy waterfall noise, mainly from the overflow box that i just installed, i beleive the teeth are making most of the noise.
and down below, the waterfall effect from the inflow compartment over the return compartment (where my pump is) make some more noise.
any ideas or tips to silence this? i am a DIY