Just buy an ozone generator from Amazon

I will have a solo 401k soon, and I already have an LLC that generates active income.My ultimate question is this; is there a way to use my solo 401k to reduce my current tax liability?  

Would you be interested in using a platform that generates responses to inbound questions?

Quote from @Lance Bolen:       If I were single and wanted to generate a job that has potential for a lot of income without investing any of my own money, I would definitely consider arbitrage.As others have stated, it's asked/answered about 127 times a week so scroll through more than one page of forum posts and you'll find plenty of information.

But I know if I can get better at lead generation I can grow quicker and provide value to potential partners.

This property will generate a lot of revenue it’s just hard finding a lender that’s not going to require a lot for a down payment. 

The property has been with them for generations.

There's no debt on the property.The idea is to leverage the equity on the house to tear down the existing and build a 6-8 unit family which would bring the house value to at least $5,0M (similar apartments are being rented for ~$3,800).We want to keep the property for cash flow and use the equity that was created and refi to fund more deals, generate more income, and so forth.The problem is we have very little cash and basically need to finance 100% of this deal.This project will roughly cost between $1,5M to $2M depending on what we do (which would be ~30% ABV).Also, we would need some money to keep their expenses throughout the entire project which could take at least 16 months.I have run multiple scenarios and even with the most conservative assumptions, it shows that the project is feasible. 

Buying a property for $490k that will only generate $1,900 a month in rent is not a good deal. 

If that's the case simply list for your break even point as that is a ~10% discount to market which should help generate some offers.