the important thing is the hydrochloric acid content. i think this has 9.5%, but you may be able to find another brand with a higher percentage. this is just what i had on-hand. and for what it's worth, i used 4 bottles on a 24ft boat. i probably could've used 5 but only had 4. i think the wife buys it at the dollar store for $2/bottle. which reminds me, i need to replace them... she was a little pissed that i used all the toilet cleaner!
|