I'm thinking of buying the PM Bullet XL2 skimmer for my 300gal reef tank. Does anybody have one of these, are they good ? This is the largest skimmer they make, The next step down would be the XL1 and bullet 3. How do they compare to ETSS and MTC? So far the customer service has been great but I still would like some real world info. Also, can you set this skimmer above your sump. The reason I ask is because it would be one less bulkhead to drill into my rubbermaid stock tank for the return [simply return it over the top]. I heard they are prone to leaking, and there aren't that many flat spots to install a bulkhead. All the help you can give, thanks. :bigbounce