I finally found out the reason behind the Hidden Grotto Regeneration code not working! It's not because the code isn't working; it's because there is a hidden item inside that you can find using the Dowsing Machine! Because you did not get that item, the grotto does not regenerate. Grab that hidden item and you'll get the grotto to regenerate again!
no, doesn't work. got a Foongus but the Drowing Machine doesn't show any hidden item. and still wont regenerate.
i thank you all for this thread, especially to whoever posted the Hidden Grotto Instant Regen codes, i cant remember where i saw it, and i kinda used it once then deleted the code, but i recall there being an AR Code out there for B2/W2 Europe/US that lets you press Select to max out the Entree level of the Entralink, essentially giving you all 45 Pass Powers including 3 ive never seen before - Lucky S/Hidden Grotto S/Explorer S which are the highest rank of those 3 Pass Powers but they also each have a 1/2/3x Down/Up variants, these 3 abilities are - Lucky = rare pokemon Encounter Chance % goes up, Hidden Grotto is the one that works especially well with the codfe for Instant Grotto Regen as it increases the % chance that youll have a Pokemon on a regen'd Grotto and Explorer simply makes Water Spots/Shaking Grass/Dust Swirls happen more often
so i took that Hidden Grotto S pass power and combined it with the Instant Grotto Regen and gonna see just how many Pokemon i catch in the various grottos compared ot Visible/Hidden items
also the S-rank powers of those 3 types last for 10 or 20 min where the lower grades of them are only 3, they also cost 50 Pass Orbs to activate instead of 20, but they last alot longer which in the end is cheaper to do even 10 min of an S than 3x 3 min of a 1/2/3x Up or Down grade
and follow up report: using Hidden Grotto S pass power and the Instant Grotto Regen code, i went to the Hidden Hollow/Grotto on Route 18 right at the end of the stairs, did roughly 30 visits, got all 4 of the Grotto pokemon except for Eevee who can appear in ANY Hollow but is really rare, id say a max of 1/3rd of it was a mix of Hidden/Visible items, largely Pokemon
edit: for those who might be interested that means Chatot, Corsola, Kingler and Dragonite, tho i saw Corsola and Chatot alot more than Kingler and Kingler only 3 times, Dragonite once
ty guys so much for that code in particular, if i find that Entralink Level Max code online anywhere tomorrow after i wake up ill be sure to post it