Rockfish

Temperature wise I don't see a problem either - during the winter the temperature in the barrel should be regulated by outside conditions, anyway. Can just move it to the garage or shed (provided my new place will have one!) during the warmer months. Otherwise it's going to be taken off-line during summer.Water quality wise there won't be any issues - I have access to all sorts of oceanographical gadgets that let me measure anything from dissolved oxygen, over salinity to fluorescence on the spot.Reckon I'll give that a go, then. Once it works and I've got the setup down pat, I'll write a report

Despite their colour-blindness, they still (as you said) rely heavily on their vision indeed have excellent eye-sight.The only reason we see "colours" is because that's what our eyes translate reflected lights at different wavelengths into. Squid will still be able to distinguish between colours, because differences in wavelengths will result in (at the very least) variations in the contrast of (e.g.) pray. If a red jig consistently works better than a blue one, then I'd put it down to refraction, pure and simple. It is, however, exceedingly hard to draw that comparison without rigging up two jigs on a simultaneous (same leader height) pater noster and -consistently- catching more squid on a paticular jig.If you have a favorite jig and you catch more on it than on others, then I suspect it's because you a) are best at using that particular jag (balance, weight, line leading), it's more attractive in black and white (or whatever "colour" combination squid see in) c) there's differences in the way the jig behaves underwater or d) a combination of all of those factors I have a like 8 (albeit pretty cheap) different squid jigs and when I decide to go squidding, I'll simply cycle through them until I catch one and keep using that jig. If it stops catching, I'll start cycling again ------ Not that I have too much experience with the old headfooters