seed won't germanate[white rhino]

I ordered one of the mixed packs from greenhouse,It has been about 6 days now and the rest are in cubes under lights apart from this one seed.It was the one that i wanted too,Thinking back this is not the only one a white widow strain also didn't germanate so i was wondering is this coulour coded seeds better than before or is it just a gimmik.Ithink the reason behind this is so that greenhouse can keep there seeds for longer.I was talking to some one at 1 of the cannabis cups and they said that the greenhouse seeds are only kept for a short time then sold at disscount prices to other seed disstrabuters.I never had a problem with any of the greenhouse seeds before they started coulouring them i had a 100% gemanation to plant success rate.The coulour only stays on for a day any how then it dissapates.I'm pissed at this because these are the two strains that i wanted i have had white widow b4 but you know how it is i fanced a change and moved on to new and better things.But the white widow i had plans for this time i was gonna breed it with the dutch passion blueberry and see what happened.Any ideas on what i should do at the time of germanation i used tap water ph of 5.0/5.5 till a few days after the coulouring had gone then i added 1 drop of multithrive to every litre of water and only misted the seed.i have it on some kitchen roll folded over so it has a nice bedding i keep this damp not to wet but nice and damp then i use a tea saucer under the towel to keep the moister in and another on top of it [THE CLAM METHOD].I also use a sealed bag to put around the two saucers to keep all the moister in.I must have done 100's of seeds this way but nothing is happening with his seed.the other seed i had at the side of it is now in a cube it has grown a tail so i put it a couple of mil below the surface and covered with a bit of the cube that i tore of the bottom.I had a look this morning at that one and it is near the surface once it reaces the top of the cube i will switch it over to plant start.But any help or tips conserning the white rhino will be greatly recived.cheers bouys&gals.

sorry i have no tips, but i also had a mixed pack from greenhouse. i started my seeds and had a great germ rate except for a couple just died right after popping the soil.

the white rhino was one. it popped through the soil and just died. so i started the second. it almost did the same thing but it finally took root and is a slow grower.

i had the same issue with the 2 cheese seeds.

i also started 1 of each trainwreck, great white shark and lemon skunk. all 3 are doing great.

Generally speaking white rhino are fucking hard to grow, anyone i've spoken to generally finds them picky, and they only prosper in perfect conditions. They are a nice smoke though is the only thing, really mellow stuff.

But yeh if you want an easy grow go with some Snow White, i got a pack of 10, planted 6, only 1 dud, and the rest sprang up with only window light and a spray can of water.