Welcome to the Forum. I have a similar greenhouse, same specs and materials. It does get very hot in my greenhouse as well! The only suggestion I can offer is water often inside, and if possible incorporate a big fan. PS. I failed at growing tomatoes in my greenhouse, they, although self-pollinating, just did not fruit. I replaced them with Roses. Never looked back! PS. Off the record, is that a "cuban" cigar? LOL.
