What's your swimming to non-swimming workout ratio?

I don't have a tons of time to work out but I consider the amount respectable. I get about 6 hours a week on a very good week. 4.5-5 hours is more normal. I had previously doing about 90% or more of this time in the pool. This week I had to shake things up a bit because my hectic schedule was getting the better of me. It's easier for me to do out of the pool workouts when this happens because I have a mini-home gym so I gain travel time. This week I swam only 4 hours, did 1 hour of rowing (2x30 minutes) and did 3x 10-15 minute weight sessions. That's about 72% swimming. I feel like I have made significant time improvements in the pool this week. My technique even feels a little better. I can't decide if I've accidentally given myself a mini-taper, or if I need a different workout balance for swimming vs. non-swimming workouts. I assumed since I only had a little bit a time that the more pool time the better. Now I am questioning this. So, what's your % workout time swimming in a week? Do you think this helps your swimming? What ratio do you think is optimal?