Yup I was thinking the same too mate. Will do it over the course of a day or two slowly I think.Better safe than sorry mate, think id be more comfortable drip feeding the storage box.
The tanks going to look very bare for a while as I'll only be adding slowly to it. I did manage to scrounge some plastic pipework from the Plummer so I can cut that into small sections and put into the substrate at angles for shelter and breeding caves for the paras and shrimp. Might look odd until
Plants have been added and grown in as the pipes white ha ha