What are you using as a carbon source and how much are you dosing Currently?

If you want to play it safe You can start from scratch if you like or cut your dose in half and check the numbers after a week of rock being in ,your no3 numbers will give you an idea if you need to raise or lower the dosage , the small amount of load the fish provide can be replicated using foods or supplements such as amino acids if need be.

Worse case scenario you'll end up with a bacterial bloom if you dose too much and with no fish shouldn't be any harm with o2 levels , after the bloom simply cut your dose back.

If it were me I would continue on with your carbn dosing as your doing and once you hit zero for nitrates cut your dose back to find your maintenance dose With no fish , when fish get added start to rise again slowly week by week then cut down again to find the maintenance dose again with fish.

Keep an eye out for a whitish film on the glass as a hint if it's getting used to far;)

Currently at 1.8ml VSV mixture. Should hit peak soon, NO3 is almost nil, then cut back to maintenance.

Well, my new rock showed up today, and mostly disappointed. I have 2 full boxes of baseball sized rocks. I think there are 3 rocks between the boxes that I can use :(
All very nice rock if I had a 20g tank, but I can't build any kind of structure with it. I'm calling it rubble. Anyone thinking of getting fresh rock, don't order Walt Smith Premium, unless you need a box of baseballs. Very unhappy right now and not sure where to go from here.

Just your luck with this build eh? Sorry to hear that. Keep your head up.

Ya, exactly my thoughts. Not a good year for me. Now I'm out many hundreds of dollars and stuck with a bunch of rock I can't use.

What? Sorry to hear that.... I would they send you a full box of rubbles?

No idea. It's ridiculous. Probably 30 rocks in a 50lb box. Should have been 7 or 8, specifically asked and was told yes, I'd get large pieces. To fully cover how I'm feeling right now, I'd have to go disable the language filters!

I've seen that rock and I thought same thing no shapes to it was really purple but all are round

I can't say this is all round, some nice shapes, but mostly 2lb or less in size. Perfect for smaller tanks I guess, but useless for me. Now I'm stuck with almost 90 pounds that I can't use.

Wow.. I can almost feel your frustration from here. I would be PO'ed too! This hobby is hard and expensive enough as it is.. but when they send you a box that's hundreds of dollars worth of lemons.. well, #$# ^$%#$ @#*& #@$%?!@# $ !