I have a question my friend bought a used 75gal. SW
predrilled tank w/ wet/dry filter. My question is it has been set up for a month now and the white tubing from predrilled hole in tank to the filter has a huge buildup of salt is this normal? I have a hung wet/dry filter on the back of my 55 gal
for 3 years w/o no salt buildup at all on the tubing.