Description of business and summary of significant accounting policies (Details Narrative) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Net loss	$ 1,248,115	$ 1,892,891
Accumulated deficit	17,685,610	16,437,495
Cash FDIC insured amount	25,000	0
Allowance for doubtful accounts	54,427	28,558
Impairment on goodwill	0	0
Impairment on intangible assets	0	0
Advertising and marketing costs	365,604	499,441
Research and development costs	$ 13,880	18,393
Percentage of minimum deposit for custom and large tank fill systems	50.00%
Percentage of restocking fees	15.00%
Customer deposits and unearned revenue	$ 255,740	167,534
Allowance for warranty work	40,468	27,651
Stock-based compensation	$ 81,424	$ 962,446
Antidilutive earnings per share, amount	107,761,177	266,722,242
Maximum [Member]
Property, Plant and Equipment [Line Items]
Cash FDIC insured amount	$ 250,000
Property, plant and equipment, useful life	5 years
Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years