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.
You can both receive employer contributions to a SEP-IRA and make regular, annual contributions to a traditional or Roth IRA. Employer contributions made under a SEP plan do not affect the amount you can contribute to an IRA on your own behalf.f the SEP-IRA permits non-SEP contributions, you can make regular IRA contributions (including IRA catch-up contributions if you are age 50 and older) to your SEP-IRA, up to the maximum annual limit.