Say I have a beer I've had fermenting in a 150 L bucket, 38 L of wort, I pitched the yeast a day ago. Now say I take a fresh batch of just-cooled wort, and pitch it on top, bringing the amount in the bucket up to 76 L. Now say in two more days, I put another fresh batch of just-cooled wort into the same container. All three worts are the same style. Is the finished beer going to be much different from what I'd get if I had put each one into its own bucket? The end goal here is to allow me to "brew" 150L batches while putting off until later the purchase of expensive large capacity kettles.