You can raise the level in the inside box by raising the drain pipes in the outer box. Or just put a sponge in the inner box.I just installed an Eshopps Eclipse M and it is INCREDIBLY noisy!! Not the dry-side box.. the wet side weir box. It's just a constant trickle. It's too deep or something. I've done everything I can think of, but can't stop the noise with out a sponge - which is less than ideal.
Anyone have the same problem? i emailed the company and they directed me to Youtube to some guy making his own standpipe. What a JOKE!