Aggressive correction for us means when past the 180~200 range, that the “wizard” becomes the “dolt”. lol. But really the pump does not take into account (for us) what appears to be a temporary/dynamic ?? insulin resistance that seems to kick in at higher numbers.
So whereas 1 unit of insulin might correct 40 BG points below 180, when running over 200, we might only get 25 BG points or so out of 1 unit. This is what I would take to mean aggressive correction as in knock the BG down using the real knowledge we have and the Wizard is a good starting point but not the final answer.
With the CGM, we do not have the same concern about going low as opposed to strictly fingerstick/meter. We could actually target 80 or even lower when calculating our correction bolus. Based on CGM trend and Insulin on Board (IOB) we might give 12 fast acting carbs (Apple Juice works well for us) when going down and around 110 or 100 with the intention of trying to get the “drop” to level out in the 80~90 range.
I can even temporarily set the CGM to alarm as soon as it hits 100 such that we don’t have to keep our eyes glued to the CGM but on the alert at 100 can decide based on the CGM data if we are good or if we need some carbs to level out and avoid an impending low.
Also - we would never wait for the IOB to be used up. Our Duration of Insulin Action (DIA - in Tandem terms) is set to 4-1/2 hrs. I am not likely to give a correction bolus any sooner than 2 hrs after the previous correction but at the same time, I am not going to wait for the entire 4-1/2 hrs to play out. However I would take the remaining IOB into account when computing the next correction bolus. We might let the Wizard use the entire IOB or we might decide to be more aggressive and discount some of the IOB - mostly based on what we see from the effect of the last bolus per the CGM graph.