the trick ( and you still get bubbles ) is to use it in small amounts ( small thin fillet ). the bubbles come from the shrinkage and gassing off. it is normal but still works pretty darn good and i haven't had a leak in 3 years. i did solvent weld it with #4 first, the #16 was insurance.
never use silicon for sealing acrylic, unless it is specifically designed for this purpose. it may hold now but will let go later and cause major problems.
i haven't heard of the weld on #5??
__________________
`
120S RR tank with 60G basement sump / fuge
Return Pump: Little Giant 4-MDQX SC
Water Movement: Seio 1500, (2) Hydor Koralia 4's
Lighting: 400W SE MH with 14K Aqua Connect
Skimmer: Euro-Reef RS250 with gate valve
Other: RODI, RDSB, PO4 / AC reactor
|