Wrong; they used Naquadah reactors BEFORE they used Naquadria. And IDK what you're talking about with regards to the stuff about carter....
whatever
and as for carter in an epsidoe of sg1 while major carter is messing with the "merlin out of phase device" a major carter in a parallel universe is playing with a version of project Arcturas that solves the project destructive side effects by rapidly cycling through several universes and stealing a bit of power from each the problem is you eventually find a universe where a fluke happens like what happens in the episode resulting in an explosion. and in the finale sg1 is trapped in a asgard time dilation field if they shut the field down an ori beam will vaporize them so they are stuck there for like 80 years and during that time carter figures out how to reverse the flow of time in the field but there is not enough power cause they've been powering a time dilation field for 80 years so they use the energy from the ori beam to reverse the flow of time in the field, send tealc back in time with some important thing, and escape. so if you combine these two episodes you get a working and stable project Arcturas