Yup assuming for sure . I seen many videos from BRS and Red sea that show the PAR levels at differnent parts of the tank at all depths . I figure their studies will be far more accurate then any hokey experiment i will do for PAR readings haha
Clear water typically has proper parameters but no i test everything weekly ?
Car oil coolant and brake fluid typically yes all levels are fine i do have sensors that and gauges for all these and regular scheduled maintanence so not sure how this is relevant ?
You are right i cant rule out lighting . I am assuming for sure . But i have heard people with the same lights running similar setting having success with SPS corals in the same tank so i have all but ruled out lighting as a cause.
In the pictures the sps and acan do look happy? and that is on the sand bed so maybe lighting is getting PAR strong enough to the tank bottom?