I see many available on Amazon. Anyone have suggestions for best one to get that won’t break the bank?  I use All For Reef powdered concentrate so will use for that and also do they work for calcium/magnesium testing so you don’t have to simultaneously have to try to keep agitating sample while trying to just drip in reagent a drip at a time?  I hate doing those tests - they really test my coordination  
 
Thanks and Merry Christmas!

				
			 
 Thanks and Merry Christmas!


 
	 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		