M7100-24X -Vlan Issues

Hello

So my current networks setup is as follows -
HP Proliant E2910AL Switch Primary core switch (everything is routed through this)
This has a bunch of switches attached to it on various ports, as well as the uplink to the sonicwall router on port 24 -199.95.137.1
There are 3 vlans currently created on the hp,
vlan1 -default -199.95.137.x
vlan2 -wireless -192.137.3.11
vlan10 -renderfarm - 192.169.10.11

All work perfectly fine, and are able to get outside the firewall, as well as mount stuff from other vlans if required.

I have added a new vlan onto the HP switch
vlan50 -10G -192.168.50.11
I have trunked ports 45,46,47,48 into trunk 50
I have tagged trunk 50 in both vlan1 default
and vlan50 .

The setup for vlan 50 is exactly the same as the setup i did for vlan2 & 10 and they work perfectly with extreme network switches.

I tried top setup the Netgear switch as follows
added vlan 50
untagged ports 1-12, then atgged ports 21-24
in vlan1 i removed ports 1-12, untagged ports 13-20 and tagged ports 21-24.

I cannot delete vlan2

saved config

in routing i added default route of
0.0.0.0 0.0.0.0 199.95.137.1

(im not sure this is correct, would my default route on this be to the firewall?

this is all i did , when i attempted to add this to the network, it broadcast stormed my network , and i had to unplug it, so there is something wrong in how the switch is set up.