wrote on Jul 30^th, 2016 at 10:33am:

Many thanks for all comments. You don't know until you ask. Had a feeling there weren't any B&Q type places in Tortosa. I know Tarragona has superstores,  are there any nearer ones that you know of ie Reus, Santa Barbara etc ?. I'm sure in time I will find most things I need in Tortosa.

There are plenty of hardware shops in Tortosa. Garcias next to Carefour does garden irrigation stuff and Tot Llatje probably does too. 

Totosa has been a thriving city for hundreds of years, I'm sure you'll manage :)