not good By Ben on 2/18/2014Ben wouldn't recommend this product to a friendThis product does not fit the ph/orp probe for the apex system. wasted money.
total waste By BobbyT on 1/29/2014BobbyT wouldn't recommend this product to a friendThe ring on these suction cups are to large. The probe slides straight through them. Doesn't even fit on the temp probe which is the largest of the probes