Well I only have the one for right now and no pics when it was being built. Yes the silver actually has contact on the inside with the water. Maybe on the next one I'll take pictures but I need to test it first. I'm not sure how well it will perform. The alpha block when I got done with it actually gave temps aboit 1c worse than the danger den but that was with a low flow pump I'm willing to bet it will do better with the ehiem 1250. The danger den maze gives about the same temps no matter what pump I use. The only pump thats given worse temps is the rio 600 and 800 I tried. They gave temps about 2c worse.
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