function changeprice1(which){switch (which) {case '144 SYSTEM': document.forms.paypal1.elements.amount.value='2199';document.getElementById("pricediv1").innerHTML = '£2199'; break;case '240 SYSTEM': document.forms.paypal1.elements.amount.value='2799.99';document.getElementById("pricediv1").innerHTML = '£2799.99'; break;case '336 SYSTEM': document.forms.paypal1.elements.amount.value='3099.99';document.getElementById("pricediv1").innerHTML = '£3099.99'; break; } }GI-GROWAbout the GI - Grow Rotating SystemThe GI Grow is made of the same high-quality stainless steel as kitchen implements. This very solid garden can accommodate (depending upon your choice of system options and possible configurations) from 48 to 336 cultivated plants in the 4" rock wool in the cube. It is VERY EASY TO USE and its output is beyond compare due to the high oxygenation in the cubes because there is no over watering. This system is suitable for various plant populations. For very large plants, you can insert a cube in the tray every 8" to 12" in the slab. Our ''CUBE LOCK'' system allow an easy rock wool cube insertion wherever in the slab and at the same time keeping very tight those precious cubes. £2199 Quantity: 12345678910Options: Please select ...144 SYSTEM240 SYSTEM336 SYSTEM