don't try that...you'll "kill" your rock. There is other ways, but less efficient and hard to do. Lemon juice a seringe...but it's hard to really get aiptasia and inject them the low ph juice in the body...they retract quickly and can compress and become very little.
Boiling water in a seringe : might burn other stuff than your aiptasia.
Also killing aiptasia with kalk injections but again...hard to target.
Joe's juice is cool because 1) you don't have to inject the product IN the aiptasia...just smother the anemone and 2) the anemone wanna eat it and burns in 2 seconds.
There are other products but dunno about their pros and cons. Still you can wait a little bit to get some Joe's juice or order it online.