Hi Reef2Reef

[Captain Quint]

Not right now. Some your basics need touching up, respectfully.

Making sure your salinity is correct and stays correct is critical for any reef tank. Any swings in salinity can cause numerous parameters to be thrown off and can be stressful to your inhabitants. A hydrometer or refractometer is a critical tool to have!
.................

+1 and important IMHO/IME

 

[Captain Quint]

Welcome and we're glad you joined.

 

[Mastiffsrule]

Welcome to R2R

 

[Mudder]

Welcome to R2R

Just my opinion..I have only had couple clams for about 14 months so no expert

First you never mention what type of clam..they do have different requirements.

Second from everything I know and have read your lighting is no where near strong enough for clams.
And lastly as mention you really need stable water chemistry for clams to thrive. they don't like change.
And ATO I would recommend with only a 35 gallon system even 1 day of little evaporation is going to change water chemistry a lot