I have a Chandler in a 30 gallon container in my glasshouse. I planted it 18 months ago in commercial potting mix and watered it thoroughly every week during the warmer seasons until water came out the bottom and ignored it during winter. Every 3 months it got a feed with whatever fertilizer was around plus a bit of magnesium sulphate. It is 5 feet high.

This week I found 4 fruit growing slightly bigger than an orange. Also 4 clusters of flowers on other branches..
The temperature in the glasshouse now that it is early summer hits 100 at 1pm and drops to 65 during the night. Winter gets cool but not frosty.
Any pointers on anything I can do to help get these fruit to maturity would be much appreciated.