The temperature in your grow room is very important for the photosynthesis of your marijuana plants. For example, low temperatures reduces evaporation through the leaves. The result is that the suction force, which takes up nutrients via the roots, becomes smaller.
Yes, you can make contributions to your IRA, subject to the IRS annual contribution limits ($5,500 for the 2015 tax year, $6,500 if you're age 50 or older). But you must keep Roth IRA and traditional IRA money separate.
Unlike traditional IRAs, which do not allow contributions after age 70 1/2, there is no age limit for making contributions to a Roth IRA.ontributions. The Internal Revenue Service permits you to add up to $5,000 annually to an existing Roth IRA. If you have a traditional IRA and Roth IRA accounts, your combined contribution to all accounts is limited to $5,000.