What type of overflow do you have ? I have ran my design overflows for yrs never a siphon problem and I have build many last on was for a 200 gal tank it had 3 1.5 inch bulkhead and 8 1, inch J tube it never lost siphon and or overflowed If drilling is not possible then if you can post a picture of your overflow and or tell the brand name and we can help a bit more as to what can be done. A well designed HOB overflow is fine to use but I see some I would not have..
Water if sump level is set properly will not overflow and if it did not that much.. Pumps go off water drains to sump about 3 gallons in a 30 gal tank pumps come back on water just started to circulate again As I said if overflow is made correctly loosing siphon seldom happens .. if at all I have all style of tank overflows to leak or sump to leak at times though as all of use have if it is holding water it will leak .. Hot water heaters toilets tubs boilers LOL everything can and does leak or flood at some point if left un managed or inspected.. This goes for fish tanks also.. _________ Some of the world's greatest feats were accomplished by people not smart enough to know they were impossible (Doug Larson) |