Description of business and summary of significant accounting policies (Details Narrative) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Net loss	$ 240,599	$ 1,248,115
Accumulated deficit	17,927,329	17,685,610
Cash, FDIC Insured Amount	250,000
Cash FDIC excess amount	85,000	25,000
Allowance for doubtful accounts	23,490	54,427
Impairment on goodwill	0	0
Impairment on intangible assets	0	0
Advertising and marketing costs	427,037	365,604
Research and development costs	$ 9,992	13,880
Percentage of minimum deposit for custom and large tank fill systems	50.00%
Percentage of restocking fees	15.00%
Customer deposits and unearned revenue	$ 410,636	255,740
Allowance for warranty work	40,468	40,468
Stock-based compensation	$ 151,492	$ 81,424
Antidilutive earnings per share, amount	50,824,019	107,761,177
Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years