Hey Chris, welcome to TR.
I don't know who possibly told you keeping an Anemone in a 10 gal was okay or if you made the decision on your own but, (and I hate to be the first to point this out to you) it was a mistake. If it was the local fish store (LFS) I'd recommend taking it back for cash or credit. I know the desirability of having a clown and Anemone, they are so darned cute, but a 10 gal isn't a proper home for the Anemone. Anemones require very bright light to survive and there is no way you can properly light a 10 gal for the anemone. The heat generated would cook the water, killing everything.
There are many assumptions people make and misconceptions surrounding the aquarium hobby that get beginners into trouble so easily. First let me commend you for finding, joining and beginning to post questions here on TR. That's the best thing you could have done. Now, the best way to utilize your newly found source of unbiased correct information is to bring every decision you ARE ABOUT TO MAKE to TR for evaluation before you make it.
Sad to say, you simply cannot trust information given by employees at MOST LFSs. It's true and others here will chime the same warning bell.
Just a couple more things and then I'll stop with the lecture. Every decision you make is extremely important to the life of the critters you intend to keep. A 10 gallon aquarium is a really, really small size to begin with. Many newbies start small, kill a few things and get out, proclaiming saltwater is too hard and expensive. A few go on to become quite good reefers usually after they go up in size. The larger the volume of water, the more stable it is. Marine critters require stable conditions. Ten gallons of water can literally change from stable to unstable in hours. In fact, truth be known, your 10 gallon tank probably has about 8 gallons of water making it less stable.
We appreciate a member posting water parameters because that's how we can better evaluate problems. Your's seem to be OK with the exception of Ammonia. The usual cycle progression is for Ammonia to peak and fall to 0 ppm, then Nitrite follows to a peak and falls to 0 ppm. You posted your Ammonia at .25, that would raise a question to me. Did something recently die that you didn't take out? Is your tank really cycled? If your tank truly cycled and nothing died, your Ammonia should be 0 ppm.
Remember this, the only thing that happens fast in a marine aquarium, is disaster.
Sorry to be so point blank about things but, I'm only trying to avoid a disaster for you. Being in the hobby and business all my life (70 yrs young), I've been there, done that.
Dick
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