a pic or two would surely help

and what do you mean hydroponically ... do you have a full set up.. or do you mean a glass of water??

I have it in a glass container of water and it receives fertilized water as often as the rest of my plants. About every 4 months. The photo below is a cluster of recently grown leaves

This is a photo of the setup if you were curious enough.

You're right about the limited amount of variegation being a light issue - it wants more light.

The smaller leaves are likely due to insufficient nutritional resources. What fertilizer are you using? Your plants needs to have all nutrients plants normally absorb via the root pathway, in the root solution and available for uptake at all times. The ideal way to do that is by providing a complete change of water weekly, and adding an appropriate volume of a soluble synthetic fertilizer to the water. Some form of water that's free of a lot of stray ions would be best, and you'll avoid the nuisance chemicals in your water (chlorine, fluoride, etc). Dehumidifier or air conditioner condensate, distilled water, or water that's been filtered by the process of reverse osmosis. The later is what I use when my plants are indoors and it makes a conspicuous difference. If you're not already using Foliage-Pro 9-3-6 fertilizer, please let me recommend it for your application and any other plants you have growing under conventional container culture. It has ALL of the essential nutrients. If you look at the label of whatever you are currently using, I bet you'll find several nutrients lacking. The two most commonly missing are calcium and magnesium.

Al

As for fertilizer I am using the generic miracle grow all purpose crystals dissolved in water that I give to all of my plants. Not the same 3-1-2 ratio but has more of N-P-K than foliage pro. I will still look into the benefits over what I am currently using. Thanks for the rec! As for water I collect rain water and use that for my indoor plants so all good there! Also a humidifier is built into the AC system of my house (been really nice for my more tropical climate loving plants).

If you are using a Miracle-Gro soluble fertilizer product as a nutrient source for any form of water culture, you'll find that it lacks Ca and Mg, both essential to normal growth, especially the Ca because it's immobile in the plant so the plant can't steal Ca from other plant parts to fuel new growth. Miracle-Gro and other fertilizer packagers typically label their products with the NPK %s of 24-8-16, 20-20-20, and in the case of Miracle-Gro, 12-4-8 as "All-Purpose" fertilizers. 24-8-16, 12-4-8, and 9-3-6 are all 3:1:2 ratio fertilizers and are preferable to 20-20-20 which of course is a 1:1:1 ratio because they supply nutrients at almost exactly the ratio at which the average plant actually uses those nutrients. This allows you to fertilize at the lowest level possible w/o deficiencies, a notable advantage.

It doesn't matter that what you're using contains a higher % of nutrients. If you follow the directions on the packaging, you'll end up with almost exactly the same strength solution no matter the product you use. Even though 24-8-16 contains twice as much N, P, and K as 12-4-8, you'll be directed to use half as much 24-8-16 which makes the solution strength exactly the same.

Best luck.

Al