Yes I did and it cleared that is why I had it checked.
Relieved to read of this. I had been reading this thread with the same concerns as Sue but unfortunately haven't been in a position to reply until today.
This is all making me very worried the guy at the shop really seemed to know what he was talking about
This is a common issue in LFSs - they
sound but aren't necessarily very knowledgeable, particularly around fishless cycles. There is still a widespread view out there by prospective fishkeepers and LFSs alike that a fishless cycle involves just having the filter switched on for a/several week(s) in a fishless tank and that readings of 0 ammonia/nitrite and <20 nitrates means that the tank is fish-ready, whereas the filter actually needs to go through the preparation phase so that it can
process the fish waste/ammonia. On the issue of sounding authoritative, that's part of their role - I overheard a conversation in a LFS involving a customer wanting "one pink coloured tetra, one blue coloured tetra...", etc, until I was able to breathe a sigh of relief when she was correctly advised to purchase them in shoals as they were shoaling fish, only for the next sentence to cause me to audibly wince as the authoritative voice said "...shoals of at least two...".. It takes time to learn - on here - what is correct/incorrect advice and therefore whether the authoritative-sounding voice is actually imparting correct information or what they think the customer wants to hear / is likely to get a sale / may get sales further down the line (of medication / replacement fish).
Just putting in my fish now 6 neon tetras and 6 harlequins.
I approve highly of your choice of fish.
Best of luck with them.