New anemone need help identifying

[quackiedodle]

Hello everyone. i picked up an anemone from Petco that was advertised as a S gigantea, but after looking up the difference between gig and haddoni im not sure it is a gig. do all gig's have purple spots on its base? this one doesnt and it does not have a very colorful base. it does have a very nice green color to the top though. i also can not tell the difference in tentacle length as even in the store they were all pretty short but had an abundance of them. it is currently in QT. as soon as it opens up i will take a picture and post. the mouth was closed in the store but once i dripped him to my water the mouth opened and "spit white stringy crap" out. any advise you have for me would be appreciated.

 

[nemoboy1]

Most likely a haddoni but picture would greatly help.

 

[quackiedodle]

after looking at more pictures of haddoni anemones im pretty sure thats what i have. i have a few questions about it.
i have an sps dominated 150 gal tank with 2 mp40's at max flow. is this to much flow for an haddoni?
my sand bed is also only maybe an inch thick, with egg crate under the sand to prevent the rocks from resting on the glass. i saw that haddoni's require a DSB, is this a problem for haddoni's?