My tank is still horribly cloudy despite filter cleanings, water changes, etc. The fish seem healthy, but it looks awful. I'm still running the airstone to make ssure there's plenty of oxygen. More cleaning to come later today, I suppose.
The cats tend to only go for the tubing when I'm not in the room or overnight, so the squirt gun approach isn't going to work. And I could try Bitter Apple, but one of my cats is insanely persistent when it comes to chewing up squishy/chewy stuff (rubber bands, plastic watch bands, bits of toys, balloons etc. -- we have to really watch him!) and I fear that it wouldn't deter him. Or that it would stop him from chewing up the lines, but while he figured out that it tasted bad, he'd still do significant damage.
I don't want to totally screw up my tank while I try to figure out a good cat deterrent (I think ultimately, I'll just get a different tank stand that would accommodate the bottles and be secure!) So Excel it is for the time being -- I pulled out the CO2 system last night. I was concerned because, until I get my tank back to normal, I don't want any more damage. Maybe I'll try the CO2 again another time, and use the Bitter Apple on the tubing as a safeguard. But for now, I'm just going to try dosing Excel.
I know Excel is expensive, but can I expect it to work pretty well in a low-ish light setup? (About 2.25 wpg is my plan.) Thanks for the tips on cats, and for any insights on Excel.