New to Reefing, I was wondering which Hanna Nitrate tester should I get?

[GreyYeti]

So I recently Brought the Hanna LR Nitrate tester which measure 0.0-5 ppm. I am unsure if I should exchange it for the High range which measures up to 75 ppm. I'm afraid my readings are too high and won't be able to accurately measure or the HR won't be able to detect the LR nitrate accurately. Which one should I have for a beginner reef tank with say about 15 mixed corals and 6 fishes.

 

[Reef - Tripp]

HR

 

[Auflyfish]

100% HR

 

[GreyYeti]

Thanks ;Spiderman

 

[pelicansreef]

The only issue with the HR is reagent availability. You get 10 test reagents with the kit but there is currently none available at most of the LFS and Online shops. I have had my name on the list to buy reagents for the HR kit for 3 weeks and don't see it any time soon.