Did you get the L330 pair from John? Jkhuu? If so they were my pair!
Shrimp will kill a panaque in no time. They NEED wood and veggies, be the veggies waffers or real veggies doesn't really matter. Those guys will chew threw a good amount of wood, its quite suprising actually. The algae waffers should be alright, but if you can try a piece of zucchini as well even if its just once a week. They also go crazy over a slice of sweet potatoe. Just take out what they dont eat the next morning, which is prob. none.
L128's tend to do better with more veg. then meat, but they need both for sure. I tend to feed my L128 & 200's mostly spriluna waffers and spirluna meat waffers from kensfish.com also some tetra color bits.