Ok so I just put together a couple of split screens for the polys that showed significant differences between substrates. My Senegalus didn't look any different so I'll just include a pic in the new tank. I must say I'm incredibly happy with the new substrate. I love the way it looks in the tank, and I love the way it makes the polys look. It keeps the blacks black and the light colors light, full detail and contrast. I've also discovered that spiderwood is perfect for polys. It provides them with the illusion of cover, but since it's kind of gangly it allows you to see them while they hide among it. I think I'm going to add another piece to their tank, along with a couple more plants.
I also plan to finally start a "My Polys" thread soon, rather than continuing to use this thread like one. I also may start a new thread just for these before and after pics because I wish I'd had them when I first got into polys, to help decide how to set up their tank.
Some of these pics kinda suck because my phone just sucks, and I finally dug my camera out of storage only to find it's broken. But I think they do a good job of showing how drastic the improvement is.
First is the Endlicheri. This guy was awesome looking all along, but now you can really see his markings. The top pic looks blurry, but believe it or not it's mostly because the black sand just ruined the detail.
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Here's my larger Delhezi. He's probably changed the most on the new substrate, and is my most active poly so he seems to be loving the new larger tank.
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My Koliba Lapradei lost almost all detail on the black sand and is now shifting toward a sorta dark green which is awesome. He took several weeks to get as dark as he was, so I think he's still changing on the new substrate. I expect him to look even better in a couple weeks.
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My Gold Dust is the only one that I think looked better on the black. But he's much much less timid in the new tank for some reason, so I get to see him a lot more. The top pic is horrible because the only time he wasn't hiding he was moving fast, so it's really blurry. But I think it gives the gist of what he looked like.
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I never saw my Mokelembembe in the last tank, he spent the whole day behind a rock I had in there, so I couldn't get any decent pics of him. But he was much more brown in that tank, and is now looking a little green. He's also a lot less timid now.
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My smaller senegalus looks almost exactly the same as the previous tank. This is the guy with the backbone issue, but he's doing great considering.
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And here's the whole tank with the new substrate
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