I haven't had any problems with my acrylic yellowing, and I've had the tank for 16 years. Same with polycarbonate, which was under 300-watts. Susan -----Original Message----- From: gsas-member-bounces@thekrib.com [mailto:gsas-member-bounces@thekrib.com] On Behalf Of John Ruhland Sent: Monday, February 21, 2005 12:17 AM To: gsas-member@thekrib.com Subject: [GSAS-Member] Glass, Silicone, Aequidens, and Automatic Feeders Thank you for the input on glass vs. plastic covers for my aquarium with the broken glass cover. I'm a little concerned about plastics, especially at the warmer temperatures directly below what will be a four-bulb light fixture. Acrylic appears to be fairly inert, and not prone to discoloration. Polycarbonate is "shatterproof," but is not as inert, and yellows with UV radiation. In terms of material safety, Steev mentioned to me that fish do not seem to be negatively affected by cured silicone. I'd like to offer some information through this listserve regarding the effect of silicone on human health. Please let me know if you have any thoughts before I send out an article I'm working on. On another note, does anyone by chance have any Blue Acaras (Aequidens pulcher) I could purchase or trade for? I have a heavily planted aquarium. Other nicely marked cichlids that do not get to be too large, and that do well in a heavily planted aquarium, would be fine as well. Any input on automatic feeders would be useful. I am told they are not very dependable, especially with pellet food (for my Oscar). The oscar is such a chowhound, that I worry about leaving her/him for more than a day. Regards, John _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member