What size did your BTA split at?

[Zenchi]

My BTA is growing like a weed and measuring about 8in. I don't plan on inducing splitting via water changes or stress but was curious at what size most people are seeing their BTAs split. Hes not hosting currently. TIA.

 

[Pistondog]

Killed aiptasia (pulled by root and h2o2 on remains) within 6 inches and he split. He was hosting a bengai cardinal. 1/2 the bta walked to the other side of the tank and the bengai toggled between the 2 for a week.