aquarium plant root fertilizer tabs 40 count planted aquarium concepts planted aquarium concepts fertilizer tabs are designed with a balanced blend of slow release fertilizers to supply aquatic plants with the right amount of nutrients when and where they need it. <br><br> instructions:<br> press tabs into substrate near the base of rooted plants or 3-6 inches apart or as needed. replace tabs after 3 months. <br><br>recommendations:<br> use in tanks with at least 1-2 inches of substrate. press tabs deeply into substrate. depending on planting density increase or reduce tab spacing.<br><br> guaranteed analysis:<br> nitrogen (n)....................1.33% <br> phosphate (p2o5)..........0.65% <br> potash (k2o)..................5.18% <br> calcium (ca)..................0.22% <br> magnesium (mg)..........0.215% <br> sulfur (s)........................1.12% <br> boron (b)........................0.02% <br> cobalt (co).................0.0015% <br> iron (fe)...........................2.3% <br> manganese (mn)........0.1935% <br> molybdenum (mo)......0.0021% <br> zinc (zn).....................0.0091% <br> nickel (ni)..................0.0002%<br><br> specifications<br> tablet size: ~ 1cm cube<br> tablet weight: ~ 0.68 +/- 0.1 grams<br><br> store at room temperature with bag sealed.