Anemone compatibility and how many clowns for a harem?

[AC1211]

In a 170 gallon tank how many clownfish (Assume either pink skunk or ocellaris) would I need to form a harem is 20 OK or is 30+ needed?
What anemone's can touch each other out of the following?
Bubble tips
Heteractis magnifica
Heteractis crispa
Stichodactyla haddoni
Which one's of these anemone's would eat the non clownfish in the tank (Yellow head sleeper goby and copperband butterfly)?

 

[Amboss72]

In a 170 gallon tank how many clownfish (Assume either pink skunk or ocellaris) would I need to form a harem is 20 OK or is 30+ needed?
What anemone's can touch each other out of the following?
Bubble tips
Heteractis magnifica
Heteractis crispa
Stichodactyla haddoni
Which one's of these anemone's would eat the non clownfish in the tank (Yellow head sleeper goby and copperband butterfly)?

Any of the anemones you mentioned have the potential for eating your fish. The anemones will show you if they are ok with touching each other. I have rbta nems, green tips and carpet nems in the same tank. No other nems touch my carpet. The green tips and roses used to touch each other but then the green tips all died. I’m thinking that maybe the clownfish killed them off as the anemones had lived side by side for a long time. With respects as to how many clowns to have in your harem and be successful, I’d highly recommend watching BRS tv YouTube video on their clownfish harem tank. It will tell you everything you need to know and what they learned was the key to success.