How long for clones roots?

Hey guys, so I'm on to my next grow. Upgraded everything to a pretty good setup now and I'm hoping I don't have problems already.

I got 6 blue cheese cuttings from someone who knows his stuff and they all looked extremely happy and healthy. So I got then in the nets and clay stone in and they've been happy for about a week now.

My problem is 3 of them have already have roots coming through the nets pots into the water and are growing like crazy (pics attached)

But the other three don't, now I had a look the best I could without disturbing them at all and it look as though the roots in these are out of the rockwool but have barely started growing any further.

Is this normal? Any idea how long clones take to develop roots out of the net pots, are 3 just progressing a lot faster do you think? I mean above the plants all look happy and thriving. All 6 were top fed 3/4 times daily with Rhisotonic water so I'm just confused why three are so far ahead already!

Thanks guys

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I have 8 in my cloner and only one is showing roots right now. some cuttings do take longer, but in my experience when one roots most root. after only a week, the three that are showing might be ahead of the curve. Keep your water fresh, ph'd, and your temps high enough and I'd bet they all pop!

Awsome thanks mate, when you say high temps how how? At the moment I am running the tent at around 20 degree? Too low?

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Wohoo, all except one now have roots showing through. Babies are looking super happy. I will get some pictures up later, try n track their progress in the post. This is my first grow with a full new good set up. Previous ones have been a bit of this and some thing give my friends etc. Now I have a great RDWC 6 pot system, some air cooled hoods with new bulbs and ballasts and some awsome new fans!

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I use the larger 2 inch jiffy pellets so I can take larger cuttings. Because my pellets are larger I see roots around 8-12 days.

Good luck, BigSteve.

For any of you guys interested as me lol, here's some pictures. 5 now have roots into the water and are growing RAPIDLY! 1 of my little ladies is still not showing roots but it is looking happy and heathy above the water so I don't think there is a problem there just a little behind the others. Sorry about the light being on guys my work hours are very sucky at the moment!!

Also attached some pics from the other day when light was off so you can deep there nice and green