It's better than in Excel in that it is substantially cheaper. It comes with an activator bottle, you just toss that away. You can either dilute the Metricide 14 with water or dose it directly. I dilute mine and put it in the excel bottle I saved. It just makes it easier for me because I got so used to dosing the Excel that it's like muscle memory and I don't even think about it. But if you dose it direct, it's pretty easy to remember that it's 2X stronger, so you just dose 1/2 as much as you would Excel. It's just preference I suppose.
It's safe to both fish and inverts in moderation. If you overdose then it can become a problem. Just, what ever you do, be careful in handling glutaraldehyde products. Treat it as if you were handling bleach.
On another but very similar note, my Metricide 14 ran out recently and when I went on Amazon to buy another, it seems they have raised the price (last time I checked). So the lowest price I found it (1 gallon jug) was $20 shipped on eBay. But, it's a little deceptive in that the picture is of a Metricide 14 bottle, but in the decription it says something like "CIDEX METRICIDE OMNICIDE 14-DAY STERILIZATION GALLON" ... but I knew that and was expecting to get a bottle of Omnicide 14, rather than the pictured Metricide 14 bottle. They both have 2.6% glutaraldehyde anways. I was a little reluctant at first to get the Omnicide 14, but this topic was talked about heavily in another forum (TPT)... basically, Omnicide will do the same thing as Metricide 14 but cheaper, and both will do the same as Excel but WAAAAAAY cheaper. So get which ever for the best price.
